Estimation of pea samples with different leaf types according to adaptability parameter

   The purpose of the current study was to identify productive collection samples with high adaptive properties for use in pea breeding.

   The study was carried out at the Federal State Budgetary Scientific Institution “ARC “Donskoy”, located in the southern part of the Rostov region.

   The objects of study were 100 collection pea samples from the collection of the ARIGRP named after N. I. Vavilov, 47 samples of which were with a usual (leafy) and 53 samples with a leafless type of leaf.

   The variety ‘Aksaisky Usatiy 5’ was used as a standard. The years of study, differing in agroclimatic conditions during the vegetation period, made it possible to estimate collection samples according to adaptive properties. The mean productivity of the collection over the years of study was 2.10 t/ha (1.58–3.25 t/ha). Seed productivity in the group of samples with a leafless type (2.10 t/ha) was at the level with leafy samples (2.09 t/ha). At the same time, the coefficient of variation was lower in the group of leafless samples – 12.4 %, than in the group of leafy ones – 13.0 %. Seed productivity of the standard variety ‘Aksaisky Usatiy 5’ over the years of study was 2.00 t/ha, ranged from 1.42 to 3.30 t/ha. Among the leafy samples, the most productive ones were ‘OMK-3’ (2.46 t/ha), ‘221/73’ (2.55 t/ha), ‘269/80’ (2.67 t/ha), ‘525/80’ (2.68 t /ha), ‘Blagodatny’ (2.77 t/ha). Among the samples with a leafy type, the most productive ones turned out to be ‘Ramus’ (2.45 t/ha), ‘Svetozar’ (2.52 t/ha), ‘Lavr’ (2.55 t/ha), ‘Koral’ (2.56 t/ha), ‘Deviz’ (2.62 t/ha). The highest values of homeostaticity with high seed productivity were found in the samples with a usual leaf, such as ‘Blagodatny’ (4.14) and ‘525/80’ (5.23). And among the leafless samples, the best ones were ‘Deviz’ (7.57) and ‘Koral’ (7.60). The study results on the homeostaticity of seed productivity of pea samples were used in breeding work when selecting parental forms for hybridization.

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