Phenotypic Variation in the Agronomic and Morphological Traits of Pisum sativum L. Germplasm Obtained from Different Parts of the World

摘要

A total of 286 genotypes were collected from 39 countries of the world and were evaluated to determine the phenotypic diversity for 17 quantitative traits. Higher degree of coefficient of variation were recorded for grain yield-5 (52.46%), biomass~(-5) (45.73%), fresh pod width~(-10) (47.24%), dry pod weight~(-10) (40.33%), plant height~(-1) (35.25%), harvest index (32.70%) and number of branches~(-3) . Cluster-II clearly reflected that late genotypes were having hghtest pods weight, shortest podwidth, and pod length; low grain yield, biomass and harvest index. While genotypes in Cluster-Ill were in contrast to Cluster-II having heaviest pods weight, longest pods width and length, highest grain yield, biomass and harvest index. Higher PC_i values have been determined for days to flower initiation which consequently were contributing weighed positive to days to pods picking, days to flower completion, days to dry pod appearance, days to plant harvesting while negatively contributed to yield producing traits, indicating that late flowering pea germplasm emphasizes more on the vegetative growth and was low yielding. However, higher PC_2 values have been obtained for number of branches~(-5) , grain yield and biomass while lower values for days toflowering, days to pods picking, days to flower completion, days to dry pod appearance and days to plant harvesting confLrming the fact that early genotypes were high yielding.