ADAPTABILITY STUDIES OF VEGETABLE SOYBEAN [Glycine max (Linn.) Merrill] IN SOUTHERN KARNATAKA
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Date
2010-08-05
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University of Agricultural Sciences, Bangalore
Abstract
Soybean (Glycine max (L.) Merrill) is believed to have originated in North Eastern China and distributed across continents. This crop is designated as “Golden Bean” or “Miracle Crop” of the 20th century because of its potential as an industrially vital and viable seed crop in many areas of India. But being a field type, it is not considered ideal for human consumption as the grains contain protease inhibitors, which are anti-nutritional. On the other hand, there are vegetable types. Normally genotypes exhibit a wide range of the variation within and between environments because of genotype × environment interactions. As a result, establishing significant superiority of a genotype becomes difficult due to interaction. The present investigation was carried out to study stability performance across four environments over two seasons over two locations for green seed yield and its components in 16 genotypes (12 vegetable types + 4 check varieties) of soybean using a randomized complete block design(RCBD). Analysis was carried as per the procedure given by Eberhart and Russel (1966).The partitioning of (environment + genotype × environment) mean squares showed that environments (linear) differed significantly and were quite diverse with regards to their effects on the performance of genotypes for green seed yield and majority of yield components. Stable
genotypes were identified for wider environments and specific environments with high per se performance (over general mean) for green seed yield per plant. The investigation revealed that genotypes GC-99010-7-196-1-2, AGS-438 and AGS-436 genotype showed stability for majority of characters with general adaptability across the environments studied. Other genotypes AGS-432 and AGS-439 showed stable performances in all the environments with some higher mean values. In contrast HARDEE had shown poor adaptability throughout the seasons for all the characters studied.
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