Genetic Evaluation of Novel Mexican cotton (<i>Gossypium hirsutum</i> L.) for Yield and Fiber Traits

The research was carried out at the experimental area of Cotton Research Institute, Agriculture Research Center, Tandojam during the kharif season of 2023. The experiment was laid-out in a randomized complete block design (RCBD) with three replications and plot size 10’ x 10’. Total eight treatments of upland cotton (Gossypium hirsutum L.) TH-F7-01/23, TH-F7-02/23, TH-F7-03/23, TH-F7-04/23, TH-F7-05/23, TH-F7-06/23, TH-F7-07/23, koonj (check) and the parameters were observed plant height (cm), sympodial branches plant-1, monopodial branches plant-1, no. of bolls plant-1, boll weight (g), seed cotton yield plant-1, GOT% , staple length (mm), seed index (g), micronaire (μg). Genotype were highly significant for height of plant (PH) , bolls plant-1 (BP), seed cotton yield (SCY) and GOT% whereas significant for sympodia, monopodia plant-1 boll weight, staple length and micronaire value. Variety koonj produced higher seed cotton yield with higher GOT% among candidated lines TH-F7-06/23 produced heavier bolls with seed cotton yield and higher seed index. Line TH-06-F7 produced taller plant with higher sympodia while TH-F7-07/23 produced higher bolls with higher micronaire. Seed cotton yield displayed highly significant and positive associates with GOT% while significant and positive with sympodia plant-1 and bolls plant weight. Rest of the traits showed non-significant association. Regression coefficient displayed that highest increase in seed cotton yield due to increase in sympodia plant-1 Whereas the highest variation in seed cotton yield is due to variation in GOT% followed by sympodia plant-1. At similarly index 50% three groups of the genotypes are formed.