Seed-score (S-score), a Method for Characterizing Seed and Lint Indices of Cotton Lines

Increased lint yields of cotton (Gossypium hirsutum L.) cultivars during recent years have been accompanied by increased percentages and decreased seed size. Small size can be associated with low seedling vigor contribute to ginning problems. In contrast, large thin coats lower yields. Our objective was develop an index that would characterize weight per seed. Seed-score (S-score) attempts normalize (SI) (LI) into a single penalties for both high SI values no penalty LI values. Location × cultivar means (6,453 lines) extracted from the 1999 through 2020 Arkansas Cotton Variety Testing program produced mean 10.17 ± 1.07 g 7.01 0.90 g. These data were used normalization weighting factors S-score. S-score then calculated transgenic evaluated in 2015 Tests. Within each year, major source variation SI, LI, The 2015-2017 set 2018-2020 12 15 common cultivars, respectively. among varied more than 25 points relatively consistent over years. will most likely as secondary selection criterion development programs.