Number Of Flowers In Inflorescence Research Articles

Effect of shading, organic fertilizer and Gibberellic acid on the flowering growth of (Lavandula angustifolia) growing in Kalar city

The experiment was conducted in the city of Kalar for the period from April 1, 2022 to September 1. The experiment included three factors. The first factor is the percentage of shading at two levels open field and 50% lath house. The second factor was organic fertilizer for poultry (Penguin) at three levels (0, 25, 50) gm.plant-1, and the third factor was spraying with Gibberellic acid at three levels (0, 250, 500) mg. L-1. The experiment was designed according to a completely randomized design (R.C.B.D.). The results showed the following. The 0% shading treatment had a significant effect on the characteristics of the number of flower clusters (19,836 clusters per plant), the length of the flower clusters (23,327 cm), the length of the flower (7,768 cm), and the fresh weight of the flower. Inflorescence (0.390 g), and the number of flowers in one inflorescence (36,095 flowers. Pink inflorescence. Plant-1). As for the effect of organic fertilizer (Penguin), both concentrations (25 and 50 gm Plant-1) had a significant effect. Characteristics of flower spike length (23.239 and 23.217 cm). Inflorescence length (6.699, 7.133 cm), inflorescence fresh weight (0.292, 0.298 g), and number of flowers in inflorescence (30.438, 30.715 flowers. inflorescence. plant-1), respectively. As for the effect of spraying with Gibberellic acid, the concentration treatment (250 and 500 mg L-1) significantly affected the length of the flower spike (22.812 and 23.215 cm). Respectively, treatment with 250 mg.L-1 significantly affected the length of the inflorescence (6.977 cm) and the number of flowers per inflorescence (30.656 flowers.Flower-1).

Evaluation of the aesthetic qualities and adaptability of introduced ornamental apple trees from the genetic collection of the Orenburg Branch of the Federal Horticultural Research Center for Breeding, Agrotechnology and Nursery

The study of ornamental and adaptive qualities of Malus Mill. from the genetic collection of ornamental crops of the Orenburg branch of the Research Center of Horticulture was carried out to assess the gene pool of introduced wild apple tree species and forms and identify suitable for the urban landscaping and the breeding process. Such characteristics as habitus, abundance of flowering, color and number of flowers in the inflorescence, color of vegetative organs, flowers and fruits during the season were taken into account; resistance to major diseases and adverse abiotic factors was evaluated. Additionally, the color of buds and flowers was characterized on the basis of the RHS (Royal Horticultural Society Color Chart). As a result of a preliminary survey on the complex of ornamental qualities and the level of adaptability, 5 most promising species were identified, which received the best ratings on the ornamental scale. Malus sikkimensis (Wenz.) Koehne ex C. K. Schneid. (31 points) was characterized by an attractive habit, the presence of flowers with a diameter of up to 40 mm and subsequently fruits that acquire a yellow-red color. Malus sargentii Rehder (29 points) was notable for its compact rounded crown, a large number of flowers with a diameter of 30 mm, followed by the formation of fruits with a dark red color. Malus floribunda Siebold ex Van Houtte (28 points) was distinguished by a large number of fragrant flowers in an umbrella-shaped inflorescence (5 — 7 pcs) with an average diameter of 30 mm, as well as attractive red-yellow fruits. Malus sieboldii (Regel) Rehder, M. toringo Siebold (28 points) was interesting primarily by the presence of 5 -7 flowers of 20 — 30 mm in the inflorescence and decorative fruits, the color of which varies from yellow to red. Malus niedzwetzkyana Dieck (28 points) attracted attention to the rich purple color of all organs due to the presence of a large number of anthocyanins, it was also worth noting the presence of a pleasant aroma during flowering and large flowers with an average diameter of 40 mm. The selected ornamental types of apple trees are favorable for use in landscaping of various scales, they are recommended for breeding work as initial parent forms.

Calculation of the external factors influence indices on plants and its application to Deschampsia antarctica Ė. Desv. populations

The main objective of the research is developing and describing in detail the calculation algorithm of the United Temperature Influence Index (UTII) and United Macroelements content in Soil Influence Index (UMCSII) on basic plant characteristics in sample populations. Additionaly, we present an example of its application in Deschampsia antarctica E Desv. research at Galindez Island, Argentine Islands, maritime Antarctic under natural condition based on experimental data sets. The final goal of the research was to evaluate the UTII and UMCSII, based on the sample plant populations contribution to the United Quality Latent Index of adaptability (UQLI). Methods. The surface temperature data set was obtained by temperature loggers at each individual plant population during April 2017 — April 2018. To determine the individual D. antarctica cover and measure the morphometric parameters of eleven D. antarctica populations, we evaluated leaf length, inflorescence length, flower length (by lower flower glume), and the number of flowers in inflorescence. Protein densitometry profiles of seeds for eleven D. antarctica populations were analyzed. To obtain the United Temperature Influence Index (UTII) and United Macroelements Content in Soil Influence Index (UMCSII) on basic plant characteristics, the extreme grouping method was applied. This method is described in current work in detail. The estimation of UTII and UMCSII were calculated by pairwise comparisons of spatial pair differences indices sets. Results. The calculation algorithms of the United Temperature Influence Index (UTII) and United Macroelements Сontent in Soil Influence Index (UMCSII), based on the example of eleven populations of D. antarctica, were developed and described in detail for Galindez Island in the 2017/18 season. Determining the total contribution of UTII and UMCSII to the UQLI is an example of comparing the value of temperature and soil macroelements to environmental parameters. Conclusions. UTII was shown to have a significant contribution to the UQLI in December and January, when the largest spatial temperature variations were observed. UMCSII did not have a statistical confidence of contribution to the UQLI, but sum with the UTII increased UTII contribution value to the UQLI. The index UTII is proposed to describe an influence of source temperature data to a large number of plant populations sample different characteristics by reducing the dimension to one number. The index UMCSII is proposed to describe an influence of a large number of source macroelements content in soil data to sample populations covers by reducing the dimension to one number. The UTII and UМCSII sets can be used to compare them with sets of the UQLI of adaptability populations sample of the same species growing under different conditions to construct correlation models for different populations.

Морфобиологический анализ представителей рода Lilium (Liliaceae) в северной лесостепи Западной Сибири

Due to anthropogenic load there is a risk of area reduction of Siberian and Far Eastern species of lilies. One of the methods for preserving the native natural gene pool of Lilium is their cultivation ex situ. The research purpose involved analysis of the biomorphological features of the representatives of the genus Lilium L. in the conditions of the northern forest steppe of Western Siberia. The results of morphobiological features evaluation wereobtained for the following species: L. pilosiusculum, L. regale, L. pumilum, L. pensylvanicum, L. callosum. Time of flowering and sum of positive temperatures (above 0 °C), effective temperatures (above +5 °C) and active temperatures (above +10 °C) were determined. They are necessary for the onset of developmental phenophases such as regrowth, budding, flowering and fruiting. The beginning of regrowth of L. pilosiusculum, L. regale, L. pumilum, L. pensylvanicum and L. callosum occurred in the first or second decades of May. Flowering started at different times: from the third decade of June to the third decade of July – L. pumilum; in June – L. pensylvanicum; from the second decade of July to the second decade of August – L. callosum; from the third decade of July to the first decade of August – L. pilosiusculum; from the third decade of July to the second decade of August – L. regale.The criterion for the onset of species flowering is the sum of active temperatures typical for the region. There is a different ability of the species to fruiting, depending on hydrothermal conditions of the vegetation period. The results showed that the local flora species L. pilosiusculum had the maximum height of shoot reached more than 100 cm; while L. callosum, L. рumilum, L. pensylvanicum and L. regale had stunted shoots (less than 60 cm). L. pilosiusculum and L. regale had the maximum number of flowers in inflorescence and indicators of flower productivity. The indicator role of the main pigments of the photosynthetic apparatus (chlorophylls a and b, carotenoids) in the leaves during seasonal development was established for the first time. It was found that the most significant indicators of the physiological state of plants were the content of chlorophyll a and b, and carotenoids in the leaves. Their amount depended on the phenological phases of development. During budding, the carotenoid content increased, the concentration of chlorophyll a was greater than the concentration of chlorophyll b at all vegetation phases, the ratio between chlorophyll a and b was within the normal limits and ranged from 2.189 to 3.225 mg/g of raw weight, the value of a+b/carotenoids in species decreased by the time of fruiting. The determined changes in the pigment complex composition can be considered as indicators of the adaptation mechanism of species to environmental conditions. The obtained results are necessary for the rational use of lilies in the reintroduction work, the development of which is especially important in Siberia.For citation: Vronskaya O.O., Sedelnikova L.L. Morphological Analysis of the Genus Lilium (Liliaceae) in the Northern Forest Steppe of Western Siberia. Lesnoy Zhurnal [Forestry Journal], 2019, no. 4, pp. 74–83. DOI: 10.17238/issn0536-1036.2019.4.74 Funding: The research was carried out within the framework of the state assignments of: 1. The Federal Research Center of Coal and Coal Chemistry, SB RAS, АААА-А17-117041410053-1 (project no. 0352-2016-0002) “Status Assessment and Protection of Floristic Diversity under the Influence of Anthropogenic and Technogenic Factors in situ and ex situ” based on the Unique Scientific System “Introduction Fund of KuzBS” USU 508670.2. The Central Siberian Botanical garden, SB RAS, project no. АААА-А17-1170126100053-9 “Revealing the Ways of Plants’ Adaptation to Contrastive Habitat Conditions at the Population and Organismic Levels”.

Morphological study of the flowers and blossoms Sambucus nigra L. in the Moscow region

The article presents material concerning the observation and description of flowering Sambucus nigra L. in the conditions of Moscow region and morphological studies of the flowers and blossoms. For the first time presents quantitative data on the sizes of the parts of a flower and the number of flowers in inflorescences Sambucus nigra L. growing in the conditions of Moscow region. The material can be used for obtaining of medicinal plants.

The effect of flurprimidol on Allium rosenbachianum Reg. forced in pots

The effect of flurprimidol on Allium rosenbachianum (Reg.) flowering and forcing period was studied. Bulbs of 18-20 cm circumference were used in the experiment. Two methods of retardant application were used: bulbs soaking before planting and triple spraying of plants during the vegetation period (in the stage of leaf rosette, open leaves and in the phase of green, ‘sitting’ bud). Flurprimidol was used in the following doses: 15 mg ∙ dm-3, 30 mg ∙ dm-3, 45 mg ∙ dm-3 and control (plants treated with distilled water). Bulbs were planted into pots on the 20th of October and ‘wet cooled’ for 14 weeks in the temperature of 9°C. During forcing in a greenhouse, morphological features of plants were observed. It was noted that flurprimidol may be effectively used for suppressing A. rosenbachianum forced in a greenhouse as a pot plant. Flurprimidol used in concentration of 45 mg ∙ dm-3 significantly inhibited growth of shoots and length of flower pedicels and leaves and increased number of flowers in inflorescences at the same time. Soaking bulbs of A. rosenbachianum in flurprimidol solution before planting shortened forcing period by 4 days.

The influence of environmental factors on flowering of french bean (Phaseolus vulgaris L.)

French bean (<i>Phaseolus vulgaris</i> L.) cultivars cultivated for green pods from six sowing dates (since mid of May till end of June) at weekly intervals were performed in 2003-2005. The study included the determination of the number of inflorescences per plant, number of flowers in inflorescence, length of inflorescence axis, and number of total and marketable pods per plant. French bean sown in the mid of May till the end of June showed the greatest variability with respect to the flowering start date and flowering period length as well as the number of pods set on a plant. French bean plants sown on different dates produced a similar number of inflorescences and flowers per bunch; 61.6-74.6 flowers per plant, on average. Weather conditions in July and August had the greatest influence on the flowering pattern and bean pod setting.

Nursery plant production controlled by prohexadione-calcium and mechanical treatments in strawberry cv. ‘Honeoye’

SummaryResponses to an inhibitor of gibberellin biosynthesis, prohexadione-calcium (Pro-Ca) at 0.01% (w/v), applied at three different times during nursery plant production, was tested in June-bearing strawberry (Fragaria ananassa Duch.) cultivar ‘Honeoye’ under cool-climate, long-day conditions. The effects of mechanical manipulation, detaching runner plants from the mothers, were also tested on the same dates. The treatment dates were 12 August, 24 August and 2 September 2004 which corresponded to day-lengths of 16, 15 and 14 h, respectively. After lifting on 11 November, and sorting into size categories, the plants were cold-stored and their performance was subsequently investigated under greenhouse conditions. Mother plant growth was decreased by the first two Pro-Ca treatments. A Pro-Ca application on 12 August also decreased the number of runners, and the total number of daughter plants was reduced by 30%.This reduction was highest in the smallest plant category, which was the most abundant.All Pro-Ca treatments increased the dry mass of the crown and the roots of plants in the smallest size category. The Pro-Ca treatment on 12 August enhanced crown-branching in the largest size category, and increased the number of inflorescences in these plants when grown in the greenhouse. All Pro-Ca treatments increased the number of flowers in inflorescences of plants in the smallest size category. In contrast, plant production did not benefit from the detachment of runners from mothers, suggesting that this nursery practice has no advantageous consequences.