Abstract
Under the condition of climate change, the need for crops resistant to abiotic and biotic stresses is increasing. Lathyrus spp. are characterized by a high nutritional value of their green biomass. The grass pea is one of the most resistant to drought, waterlogging, cold, salinity, diseases and pests among cultivated legumes, and it is grown at minimal cost. The creation of new Lathyrus L. sorts with an improved nutrient composition of nutrients will allow to obtain high-quality feed in areas with extremely unstable weather conditions. In this connection, we studied the patterns of variability in the parameters of the carbohydrate complex (sugars, their lactone and methyl forms), polyols (including phenol-containing alcohols), phytosterols, free fatty acids (FFA) and acylglycerols in the green mass of 32 samples of Lathyrus sativus L., L. tuberosus L., L. sylvestris L., L. vernus (L.) Bernh., L. latifolius L., L. linifolius (Reichard) Bassler. from the VIR collection, reproduced in the Leningrad region in contrasting conditions 2012, 2013.The content of identified compounds varied depending on the genotype, species, and weather conditions. High temperatures and high level of precipitation in 2013 contributed to the accumulation of monosaccharides, in more colder and drier conditions in 2012 – oligosaccharides, most of polyols and FFA. The cultivated species (L. sativus) was distinguished by its high sugar content, and the wild species as follows: L. latifolius by FFA; L. linifolius by ononitol, myo-inositol, and glycerol 3-phosphate; L. vernus by MAG and methylpentofuranoside. The species cultivated in culture (L. sativus) was distinguished by a high sugar content, wild species: L. latifolius – by FFA, L. linifolius – ononitol, myo-inositol and glycerol-3-phosphate, L. vernus – MAG and methylpentofuranoside. According to our results, the studied samples are promising for the selection of Lathyrus varieties with high nutrition quality and stress-resistant.
Highlights
The changing climate leads to the expansion of areas with extremely unstable weather conditions, enhancing the demand for stress-resistant crops grown for food and feed
Materials and methods The experiment encompassed 32 accessions of six Lathy rus spp. from the collection of the Vavilov Institute (VIR): grass pea (L. sativus), flat pea (L. sylvestris L.), spring pea (L. vernus (L.) Bernh.), heath pea (L. linifolius (Reichard) Bassler), everlasting pea (L. latifolius L.), and tuberous pea (L. tuberosus L.), grown in the fields of Pushkin experimental laboratories of VIR in 2012 and 2013 according to the guidelines approved by VIR (Vishnyakova et al, 2010)
This study presents analytical results of comparing the contents of over 60 compounds in the peavine green biomass, including such groups as sugars, polyols, phytosterols, and free fatty acids (FFA)
Summary
The changing climate leads to the expansion of areas with extremely unstable weather conditions, enhancing the demand for stress-resistant crops grown for food and feed. The best-known species is the grass pea (Lathyrus sativus L.) with its millennia-long cultivation history, cultivated on all the continents. This leguminous crop is considered one of the most resistant to drought, waterlogging, and cold (Campbell, 1997). It is adapted to a diversity of soil types, including salinized soils, and would yield harvests in the environments where other crops would die, so it was recognized as ‘the food for survival’ (Sarkar et al, 2019). The yield of grass pea seed reaches 2.9 t/ha, and that of its green biomass is 5.2 t/ha
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