Bunch Size Research Articles

MECHANICAL PROPERTIES OF SEVERAL LOCAL AND INTRODUCED GRAPE VARIETIES: RESEARCH AND EVALUATION OF THEIR TECHNOLOGICAL SUITABILITY

The article presents the findings from a study evaluating the morphological, biological and technological characteristics of various table and technical grape varieties cultivated in the Republic of Azerbaijan. The research adhered to the descriptors of the International Organization of Vine and Wine (OIV). The study reveals a wide range in the size of grape bunches, with medium, large and small bunches being predominant. Notably, the local and introduced varieties Arna-grna, Khindogny, Hamashara, Shirvanshahy and Moldova exhibited superior morphological traits such as mass, volume and size of bunches. Juice yield, a key indicator of technological suitability, ranged from 45.5% to 80.0%. The Shiraz variety had the lowest juice yield (45.8%), whereas the Moldova (76.8%) and Uni Blanc (80.0%) varieties had the highest. Most varieties had small berries, but Arna-grna (481 g), Gyanjavi (341 g) and Moldova (317 g) were considered medium. The sugar content in the berries was categorized as average, high or very high, with Shirvanshahy having the highest sugar content (25.0 g/100 cm3). The titratable acidity of the varieties was low to average, while the active acidity was mainly low.

Banana Bunch Weight Estimation and Stalk Central Point Localization in Banana Orchards Based on RGB-D Images

Precise detection and localization are prerequisites for intelligent harvesting, while fruit size and weight estimation are key to intelligent orchard management. In commercial banana orchards, it is necessary to manage the growth and weight of banana bunches so that they can be harvested in time and prepared for transportation according to their different maturity levels. In this study, in order to reduce management costs and labor dependence, and obtain non-destructive weight estimation, we propose a method for localizing and estimating banana bunches using RGB-D images. First, the color image is detected through the YOLO-Banana neural network to obtain two-dimensional information about the banana bunches and stalks. Then, the three-dimensional coordinates of the central point of the banana stalk are calculated according to the depth information, and the banana bunch size is obtained based on the depth information of the central point. Finally, the effective pixel ratio of the banana bunch is presented, and the banana bunch weight estimation model is statistically analyzed. Thus, the weight estimation of the banana bunch is obtained through the bunch size and the effective pixel ratio. The R2 value between the estimated weight and the actual measured value is 0.8947, the RMSE is 1.4102 kg, and the average localization error of the central point of the banana stalk is 22.875 mm. The results show that the proposed method can provide bunch size and weight estimation for the intelligent management of banana orchards, along with localization information for banana-harvesting robots.

Genome-wide association analysis to identify genomic regions and predict candidate genes for bunch traits in grapes (Vitis vinifera L.)

Grape quality traits like bunch and berry size are important as they influence consumer acceptance and marketability of the produce. Therefore, a deeper understanding of their genetic determinant is crucial for varietal improvement. In this study, association mapping was performed using SNP marker data and three season phenotyping data of 122 diverse grapevine genotypes. Genotyping by sequencing (GBS) identified 1,08,777 high quality SNPs distributed on all the chromosomes. A good correlation was observed across three seasons for berry size and bunch length. Genome-wide association analysis using six different models identified significantly associated SNPs for each of the traits. We identified 13 significant SNPs associated with bunch length, seven of them were located on linkage groups (LGs) 9 and 15. For berry diameter, 18 significantly associated markers located on LGs 4, 5, 17 and six other LGs were identified. Fourteen SNPs mainly on linkage groups 3 and 5 were identified for berry weight. Three closely linked markers on LG3 explaining about 20-25 % variation suggested presence of major QTL for berry weight on LG3. Candidate genes were mined in the genomic regions containing significant SNPs explaining large phenotypic variation. Twenty-one genes for bunch length, 28 genes for berry length, 22 genes for berry diameter and 25 genes for berry weight were predicted. Several predicted genes were found to have function related to cell enlargement, cell morphogenesis and other physiological processes required for cell growth and development.

Ripening Trends of Vitis vinifera L. cv Sugrasixteen (SABLE SEEDLESS®) Table Grapes at Different Crop Loads and Bunch Sizes

Crop load and bunch size manipulation are two prominent viticultural practices used in the production of Vitis vinifera L. cv. Sugrasixteen table grapes. However, their respective effects on berry ripening are unknown and were investigated in this study. A split-plot vineyard block design with three different crop loads (low, medium, and high) as the main treatments and two bunch size treatments (small and large) as the subplot factors were used. Weekly berry samples from veraison to harvest from each treatment were analysed for mass, total soluble solids (TSS), titratable acidity (TA), and pH. Data mining established the ripening trends and explored the possibility of estimating optimal harvest dates using EC50 values. Results showed that berries of large bunches had higher average mass than small bunches during ripening. Increased crop loads resulted in berries with lower mass, TSS and TSS: TA ratio, and delayed berry ripening. Conversely, berries from the low crop load increased in mass and accumulated TSS faster during ripening than higher crop loads, reaching EC50 two to four days earlier with accumulation starting to slow down at higher values. EC50 could be used to estimate harvest dates for low to medium crop loads, but not for high crop loads. This study provides the first in-depth analysis of SABLE SEEDLESS® ripening trends concerning crop load and bunch size management. The results have implications for the grape’s overall eating quality. The statistical prediction of optimal harvest dates for lower crop loads could have practical benefits for the industry.

ПОДВОИ ДЛЯ БЕССЕМЯННЫХ СОРТОВ ВИНОГРАДА: ОБЗОР

The article considers the issue of scion-rootstock combinations of seedless grape varieties in Russia and the world. The rootstock influences the physiological and biochemical parameters, stability, yield capacity and quality of the yield of grafted grape varieties. It is relevant to study the experience of different countries to determine the direction of research on this topic in Russia. In the world, the main research is concentrated predominantly in the countries producing table grapes: India, China, Egypt, Chile, Brazil, Greece, there are also studies from Mexico, Chile and Australia. Depending on the agro-climatic conditions, soils and terrain, appropriate rootstocks are used. High indicators of productivity, quality and resistance to stressors can be achieved in plants of the same variety on different rootstocks, for example, the yield capacity of the Thompson Seedless variety in Egypt is higher on the 1103 Paulsen rootstock, and quality indicators are higher on the Salt Creek rootstock. In Australia, the own-root variant had a higher fruitfulness of shoots, but Thompson Seedless variety grafted on Ramsey rootstock had higher yield capacity and bunch size. Scion-rootstock combinations are studied both for proven grape varieties and for new ones. Studies of variety-rootstock combinations in Russia are limited to individual works. The main rootstock for seedless varieties is Kober 5BB. Given the high role of rootstocks in increasing the abiotic and biotic stability of plantings, increasing productivity and improving the quality of grapes, the development of research in our country in the field of studying and effective use of rootstocks is relevant.

ПОДВОИ И НОРМА НАГРУЗКИ ДЛЯ ВИНОГРАДА ЛИВИЯ

In the course of the experiment, the differentiat-ed influence of various rootstocks and the norms of the bush load with shoots on the agrobiologi-cal indicators of grapes was established. The ob-ject of research was the grapevine variety Livia, rootstocks SO4 and 41B. The studies were car-ried out in the conditions of a moderate conti-nental climate in the Central agroecological zone of viticulture of the Krasnodar region, on irrigat-ed vineyards in a covering culture. Scheme of planting bushes was 3.8×2 m. The soils are low-humus, leached powerful chernozems. The most productive were the vineyards on the rootstock 41B. The bunch size on the 41B rootstock was 1.34 times greater than on SO4, the yield capaci-ty – 1.56 and amounted to 696 g and 28.23 t/ha, respectively. The predominant influence of the 41B rootstock in comparison with SO4 on the productivity of the Livia grapes is preserved with a differentiated load of grape bushes with bunches. With a maximum load of bushes with bunches (SO4 – 33, 41B – 38 pcs./bush), their weight on the 41B rootstock was 43 % higher than on SO4, yield capacity – by 62 %, with an average load (SO4 – 27, 41B − 32 pcs./bush) – by 27 and 48 %, respectively, at minimum load (SO4 – 19, 41B – 23 pcs./bush) – by 32 and 59 %, respectively. The influence of rootstocks on the norm of bush load by shoots is not unam-biguous. Against the background of the maxi-mum number of bunches on bushes, the highest values of bunch weight and grape yield capacity on SO4 and 41B were at loads of 25 and 26 shoots/bush, average – 25 and 33 shoots/bush, minimum – 31 and 20 shoots/bush, respectively. For growing high yields and attractive sizes of bunches of table grapes of Livia variety in the Central agroecological zone of the Krasnodar re-gion, it is recommended to use rootstock 41B, the load norm of bushes with shoots of 26 and bunches of 38 pcs./ bush.

ИЗУЧЕНИЕ И ОЦЕНКА ПО МЕЖДУНАРОДНЫМ АМПЕЛОДИСКРИПТОРАМ НЕКОТОРЫХ МЕСТНЫХ И ИНТРОДУЦИРОВАННЫХ СОРТОВ ВИНОГРАДА

The article presents the results of the study and evaluation of bunches, berries and seeds of some technical grape varieties, as well as the Moldova variety, which has a universal use in Azerbaijan. Morphological, biological and technological features of the varieties selected as the object of research were studied according to the descriptors of the International Organization of Vine and Wine (OIV). Among the local and introduced grape varieties, Arna-grna, Khindogny, Gamashhara, Shirvanshahy and Moldova varieties outperformed the control and other tested varieties in terms of uvological parameters (weight, volume, bunch size, etc.). The yield of juice in the studied varieties varied within 63,5-86,8 %. The highest juice yield was noted in the Shirvanshahy variety (86,8 %), and the lowest in the varieties Carignan (63,5 %) and Syrah (63,8 %); the relatively low value of this indicator can be explained by the increased sensitivity shown by these varieties to local edaphoclimatic conditions, as well as climatic changes, when in the conditions of Azerbaijan in the areas of traditional rainfed viticulture, berries often do not gain enough juice without additional watering. By weight of 100 berries the studied varieties were mainly classified as small, and the varieties Arna-grna (481 g), Gyanjevi (341 g) and Moldova (317 g) were classified as medium. The sugar content of the berries of the studied grape varieties was assessed as medium, high and very high, in accordance with descriptor OIV 505; the highest indicator was noted in the Shirvanshahy variety (25,0 g/100 cm³).

Development of the self-modulation instability of a relativistic proton bunch in plasma

Self-modulation is a beam–plasma instability that is useful to drive large-amplitude wakefields with bunches much longer than the plasma skin depth. We present experimental results showing that, when increasing the ratio between the initial transverse size of the bunch and the plasma skin depth, the instability occurs later along the bunch, or not at all, over a fixed plasma length because the amplitude of the initial wakefields decreases. We show cases for which self-modulation does not develop, and we introduce a simple model discussing the conditions for which it would not occur after any plasma length. Changing bunch size and plasma electron density also changes the growth rate of the instability. We discuss the impact of these results on the design of a particle accelerator based on the self-modulation instability seeded by a relativistic ionization front, such as the future upgrade of the Advanced WAKefield Experiment.

Diagnosis of table grapes sold at retail in Pelotas - RS

Table grapes are among the most consumed and commercialized fruits in the world and that has increased considerably in recent years. Table grape production in Pelotas is concentrated in the summer, and the grapes that are consumed in other seasons are from other states or even countries. The present work objective is to develop a research about the main table grapes sold in the retail of Pelotas and their qualitative characteristics. In each season of the year, samples were collected from all cultivars available in four previously selected retailers were carried out, with at least 2 bunches per cultivar, in order to analyze the following variables: bunch and berry mass, bunch length, length and diameter of berry, soluble solids (SS) and titratable acidity (AT). Of the grapes sold at retail in Pelotas, the fine ones represent more than 60% in all the periods studied when compared to American and hybrid grapes. The traditional varieties Italia, Red Globe, Niagara Rosada and Benitaka, are the most commonly found. Spring was the season in which the greatest diversity of cultivars was found. New cultivars such as Arra15®, Sable Seedless® and Sweet Celebration® are slowly being introduced. Some cultivars were outside the commercialization standard, in terms of maturity and bunch size.

Why Gender Matters in Breeding: Lessons from Cooking Bananas in Uganda

This study examined the gender-differentiated trait preferences of cooking banana (matooke) for farmers and consumers in Central Uganda to inform banana-breeding strategies. Women and men banana farmers might have differing production objectives, norms, and values which drive decisions on which varieties to adopt and grow. However, breeders rarely consider this in their variety development programs, leading to lost opportunities for equitable breeding. An exploratory sequential mixed-method approach was used to obtain a richer understanding of the trait preferences of women and men, which explains the acceptability of cooking bananas. Consumer preference tests for the candidate banana varieties and released hybrids were also conducted. The results showed that the universal attributes for variety selection were bunch size, taste, resistance to pests and diseases, drought tolerance, food texture/softness, maturity period, and finger size. Men appreciated agronomic and market-related traits, such as tolerance to drought and poor soils, bunch size and compactness, maturity period, and shelf life, while women valued processing and cooking traits such as flavour, food colour, ease of peeling, finger size, and agronomic traits such as plant height. These are plausible attributes for the gender-responsive breeding of bananas. The findings highlight the need to redesign the banana-breeding pipeline and process in Uganda to deliver varieties with attributes desired by women and men along this commodity value chain. A participatory demand-driven and gender-responsive process involving stepwise selection criteria that commences with quality traits followed by production traits while integrating gender-specific preferences should be employed to ensure the acceptability of cooking banana hybrids by women and men end users. This requires integrating different disciplines, including social scientists and gender experts, along the entire breeding process for more inclusive products and equitable outcomes.

Three-dimensional acoustic monitoring of laser-accelerated protons in the focus of a pulsed-power solenoid lens

Abstract The acoustic pulse emitted from the Bragg peak of a laser-accelerated proton bunch focused into water has recently enabled the reconstruction of the bunch energy distribution. By adding three ultrasonic transducers and implementing a fast data analysis of the filtered raw signals, I-BEAT (Ion-Bunch Energy Acoustic Tracing) 3D now provides the mean bunch energy and absolute lateral bunch position in real-time and for individual bunches. Relative changes in energy spread and lateral bunch size can also be monitored. Our experiments at DRACO with proton bunch energies between 10 and 30 MeV reveal sub-MeV and sub-mm resolution. In addition to this 3D bunch information, the signal strength correlates also with the absolute bunch particle number.

Two new Drawida (Oligochaeta, Moniligastridae) earthworms from Vietnam.

Two new earthworm species are described, namely Drawidaangiang sp. nov. and Drawidacochinchina sp. nov. The former can be recognized by having male pores on spiniform penises in intersegment 10/11, an erect and sac-shaped spermathecal atrium, glandular prostate, the capsule coiled one round, the vas deferens strongly coiled but small, two large, round, genital markings on segments ix-x, and three gizzards in xiii-xv. The latter species is distinguished in having the male pores placed on highly elevated, backwardly directed, conical penises in 10/11, a slender spermathecal atrium, a glandular prostate, a somewhat folded capsule, the vas deferens strongly coiled as a bunch and equal size to the testis sacs, a pair of genital markings located closely anterior to the penises with 1-3 additional ones in xi-xii, and three or four gizzards in xiii-xvi. The DNA barcode fragment of the COI gene was extracted for each species, and the COI genetic distances and phylogenetic analysis also supported two new species..

EPPO Datasheet: Naupactus xanthographus

EPPO Datasheet: <i>Naupactus xanthographus</i>

Photon yield of superradiant inverse Compton scattering from microbunched electrons

Compact x-ray sources offering high-brightness radiation for advanced imaging applications are highly desired. We investigate, analytically and numerically, the photon yield of superradiant inverse Compton scattering from microbunched electrons in the linear Thomson regime, using a classical electrodynamics approach. We show that for low electron beam energy, which is generic to inverse Compton sources, the single electron radiation distribution does not match well to collective amplification pattern induced by a density modulated electron beam. Consequently, for head-on scattering from a visible laser, the superradiant yield is limited by the transverse size of typical electron bunches driving Compton sources. However, by simultaneously increasing the electron beam energy and introducing an oblique scattering geometry, the superradiant yield can be increased by orders of magnitude.

Comparison of Mechanical, Assisted and Manual Harvest of Origanum vulgare L.

In Italy, the production of Origanum vulgare L. is lower than the national market demand, so there is an increasing interest in this crop, even if the manual harvest and bunch binding represent ca. 60% of the production cost. The aim of this work is to evaluate the harvest efficiency, as well as the working capacity, productivity and quality of mechanical harvesting by means of a reaper-binder designed for cereal and forage crops and assisted harvesting by means of a long-reach edge trimmer. In fact, the final aim is to suggest a machine and a method for oregano harvesting that could significantly reduce the time and, therefore, the cost of this crop operation, while achieving a product quality similar to that obtained by manual harvesting. Tests of mechanical and assisted harvesting were carried out using a reaper-binder after modifying it (i.e., reducing its forward speed, cutting height and bunch size to improve its working capacity, productivity and quality) and an edge trimmer, respectively. The tests of mechanical and assisted harvesting were compared with manual harvesting. In the testing field, with an irregular shape and an area of one hectare, nine rows were selected and divided into three replications, each comprising three tests, i.e., mechanical, assisted and manual harvesting. The modified reaper-binder allowed us to achieve working capacity and productivity rates much higher than those obtained with manual harvesting. Moreover, its harvest quality, in terms of bunch weight and binding height, favourably compares with that manually obtained. Furthermore, the edge trimmer allowed us to achieve working capacity and productivity rates lower than those obtained by means of the reaper-binder but much higher than in manual harvesting. Thus, the reaper-binder can minimise the harvest time and, therefore, cost while harvesting bunches slightly bigger than those manually harvested, even if it requires a high initial investment cost. Instead, the edge trimmer can be a cheap solution for reducing the harvest time and cost. Therefore, mechanical and assisted harvesting could spread oregano production in areas of inland Sicily and other Mediterranean regions that are often cultivated with low-profit herbaceous plant species or lie fallow. Thus, it would be possible to increase farmers’ incomes and job opportunities, as well as preventing or minimising the hydrogeological instability in these areas.

Increased Yield and High Resilience of Microbiota Representatives With Organic Soil Amendments in Smallholder Farms of Uganda.

Organic matter inputs positively affect soil fertility and quality but management effects on the soil and plant microbiome are less understood. Therefore, we studied the response of microbial colonization of the East African highland banana cultivar “Mpologoma” (AAA genome) under different mulch and manure treatments on three representative smallholder farms in Uganda. In general, the gammaproteobacterial community appeared stable with no significant response to organic matter inputs after 24 months of treatment. Significant differences (p < 0.05) in the plant-associated carpo-, phyllo-, and rhizosphere microbial community composition and diversity were found among individual sampled farms, independent of added soil inputs. Across farms, banana fruit harbored a richer and more balanced gammaproteobacterial community than the rhizo- and endospheres. Gammaproteobacterial beta diversity was shaped by the microenvironment (44%) as well as the sampling site (4%). Global effects of treatments in the rhizosphere analyzed using linear discriminant analysis effect size showed significantly enriched genera, such as Enterobacter, under manure and mulch treatments. As shown in previous works, bunch size and total yield were highly increased with manure and mulch, however, our results highlight general short-term microbial stability of Ugandan banana cropping systems with increases in the gammaproteobacterial community.

Radiation of a charged particle bunch moving along a deeply corrugated structure with a relatively small period

We investigate electromagnetic radiation from a bunch moving along a corrugated conductive planar structure. The radiation is analyzed at wavelengths which are much greater than the period of the corrugation. In this case, the theoretical solution can be obtained by the use of equivalent boundary conditions (EBC). Here, we consider the case of deep corrugation, i.e. we assume that the depth of the structure is of the same order as an inverse wavenumber. Using the EBC method we obtain the general solution of the problem and investigate it asymptotically. It is shown that the bunch generates surface waves propagating in the plane of the structure, whereas volume radiation is absent at the frequencies under consideration. The surface radiation is analyzed in detail. In particular, it is demonstrated that, under certain conditions, the properties of the surface waves can be used for the determination of the bunch size. In addition, we consider the energy losses of the bunch. Typical dependences of the energy losses on the corrugation parameters are obtained and analyzed.

Pelaksanaan Penimbangan Jual Beli Buah Kelapa Sawit Ditinjau Dari Fiqih Muamalah

The background of the problem in this study is that the implementation of fruit weighing in the sale and purchase of oil palm in Dusun Cinta Damai, Pasir Tuntung Village is carried out using a hanging scale in the form of a round basket, and in its implementation it starts from the weighing that occurs between oil palm fruit sellers or farmers and buyers of oil palm fruit. or toke there is obscurity where the unclearness that is done is to reduce the scale by estimating the weight of the oil palm fruit bunches that do not consider the size of the oil palm fruit bunches or not by 15%. Palm oil to Ram on the same day Toke had to wait for the Ful Fruit Car Tub with oil palm fruit, The purpose of this study was to determine the Implementation of Fruit Weighing in Palm Oil Sales and Purchase and to Know the Overview of Muamalah Fiqh of Fruit Weighing Implementation In the Sale and Purchase of Palm Oil in Cinta Damai Hamlet, Pasir Tuntung Village, Kotapinang District, Labuhan Batu Selatan Regency. To reveal this problem in depth and thoroughly, researchers used a qualitative descriptive method. Then the Fiqih Muamalah Review of the Implementation of Fruit Weighing in the Sale and Purchase of Palm Oil in Cinta Damai Hamlet is not in accordance with the Rukun and terms of sale and purchase where the terms of sale and purchase in terms of the object must be seen in number, weight, measure and other measurements and there is no Gharar element (unclear) inside it. Meanwhile, the Buyer or Palm Fruit Toke estimates the weight of a Oil Palm Fruit bunch by 15%.

Some Important Food Quality Traits of Autochthonous Grape Cultivars

Grapes (Vitis L.), one of the most important and old fruit crops in the world, are grown in a wide range of environments from Australia to North America and from Japan to Chile. All grape growing countries use both international and local cultivars in production to obtain fresh and dried fruits or wine. In Turkey, each region has their own local grape cultivars. Seven local cultivars and one standard grape cultivar, grown in Coruh valley, were analyzed for morphological traits (bunch size, berry color, and berry shape), biochemical characteristics (sugars, organic acids, vitamin C, phenolic compounds, total carotenoids, and flavonoids content), and % inhibition level (antioxidant capacity). The grape cultivars differed from each other in the morphological and biochemical traits. The grape berries contain predominantly nine main phenolic compounds, five organic acids, and two sugars. Among phenolic compounds, chlorogenic acid, syringic acid, rutin, and quercetin were found to be dominant for most of the cultivars between 2.365–5.112 mg/L, 0.923–2.147 mg/L, 0.856–1.711 mg/L, and 0.621–1.347 mg/L, respectively. The local cultivar Kirmizi Istanbul had more chlorogenic acid than the other cultivars. The berries with darker skin color, specifically Kara Turfanda and Nanebur, had higher % inhibition level (antioxidant capacity) than the brighter ones, which correspond also to the results of flavonoid contents. Overall, the local genotypes were found promising due to favorable properties and could be recommended for farmers and consumers.

Fusarium oxysporum V5w2 is a non-beneficial endophyte that interacts with Radopholus similis in a wilt disease complex of banana

Fusarium oxysporum V5w2 is a fungal agent, which was originally intended for biological control of the root pathogenic nematode Radopholus similis among other banana pests. Information on some of its actual effects on banana plants and pests has been scarce. A study was conducted to assess the effects of F. oxysporum V5w2 and mulch on R. similis and banana plants in the field. The experiment was a 3-factor (2 × 2 × 2) complete randomized block design with or without F. oxysporum V5w2, R. similis or mulch. Root damage was higher when plants were inoculated with R. similis compared to non-inoculated plants, while plant height, leaf size, bunch size and banana yields were lower in R. similis-inoculated plants. Plant growth and bunch size were greater in mulched than in non-mulched plots, with banana yields on mulched plots increasing by 131% to reach 37 tonnes per hectare. F. oxysporum V5w2-inoculated plants were shorter, with fewer leaves that were smaller, and had shorter duration to harvest than non-inoculated ones. When R. similis-inoculated mulched plants received F. oxysporum V5w2 inoculum, plant toppling-over occurred less frequently compared to plants that were not inoculated with the fungus, probably because the plants were smaller in size during growth. The benefits of mulching in banana production were evident, while the claimed enhancing effect of inoculating tissue culture plants with F. oxysporum V5w2 as a biological control agent could not be verified. I conclude by suggesting that, the use of F. oxysporum V5w2 as a biological control agent of R. similis and other pests should be reconsidered, because this fungal strain has the potential of invading xylem vessels and becoming pathogenic to banana plants.