Comparative Evaluation of Intraspecific Isohybrids in Gossypium hirsutum L.
Feb 11, 2019
Isohybrids of Cotton Ankur 651 were tested at the research farm of the company under rainfed conditions during 1997-98 to study the effect of different plant characters on the economic parameters. New lines of the male parent Ca/H-128 that were isogenic for the character okra leaf shape, pigmented plant body and pigmented anther filament were developed by back-crossing. The combinations showed non-significant differences for days to flowering, number of monopodia, number of sympodia, plant height, ginning outturn, 2.5% span length, uniformity ratio, micronaire, fiber maturity and 1/8” gauge tenacity. Semi okra F1 gave the highest seed cotton yield followed by entire leaf F1, F1 with pigmented plant body and F1 with pigmented anther filament. Entire leaf F1 exhibited the highest average growth rate followed by F1 with pigmented anther filament, semi okra F1 and F1 with pigmented plant body. Semi okra F1 proved efficient for economic characters.