Abstract
oN, longitude 72.36 o E and altitude 157.65 m. The results revealed that plant growth parameters like plant height, number of bolls plant -1 and seed cotton weight boll1 , were differed significantly (P < 0.05) among Bt and non-Bt cotton cultivars. Seed cotton yield and fiber quality parameters such as maturity percentage, micronaire value, staple length, fiber strength and virus infection percentage were also significantly (P < 0.05) different among different cultivars. Bt -1 21 had maximum value for seed cotton weight boll-1 and maturity percentage and produced 26% higher seed cotton yield than all other cultivars. Furthermore, it also showed 58% less cotton leaf curl virus infection compared to other cultivars. BH-162 produced fiber with maximum length and fineness but it appeared most vulnerable to virus attack. It was concluded that Bt -1 21 performed best in most of the studied traits than other cultivars and may be recommended for cultivation in areas having arid to semi-arid climatic conditions.
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