Vol. 6, Issue 3 (2018)
Evaluation of Bt cotton hybrids for yield and fibre quality traits
Author(s): Y Satish and KV Siva Reddy
Abstract: Most of the cotton cultivated area around 90 percent in India is covered with Bt cotton (BGII) hybrids. These BGII hybrids have been developed by various private companies. These hybrids are to be tested for their yield performance in a particular location for their adoption. Keeping this in view, a field experiment was conducted to evaluate sixteen intra-hirsutum Bt cotton hybrids including three Bt checks at Regional Agricultural Research Station, Lamfarm, Guntur, Andhra Pradesh in Kharif 2015-16 in Randomized block design with three replications. The analysis of data revealed significant differences between the Bt cotton hybrids for seed cotton yield. The seed cotton yield ranged from 2229 to 3051 kg/ha, whereas, the hybrids KSCH 212 BGII (3051 kg/ha), SWCH 7525 BGII (2809 kg/ha) and NCH 6022 BGII (2781 kg/ha) recorded significantly superior yield to Bt checks Bunny BG II (2330 kg /ha) and Mallika BG II (2277 kg/ha). Lint yield ranged from 715 to 997 kg/ha. Highest lint yield was recorded by the check JADOO BGII (1027 kg/ha). Highest number of bolls per plant was recorded by JAADOO BGII (64) followed by KSCH 212 BGII (56), CCH 06 BGII (56) and PCHH 6 (56). Seed index values ranged from 9.2 to 13.2 g. Highest value for seed index was recorded by VCH 314 BGII (13.2 g). Lint index values ranged between 5.4 to 6.2 g. The hybrid VCH 314 BGII recorded highest lint index (6.2 g) and recorded significant lint index over the check hybrid BUNNY BGII (5.7 g). Boll weight ranged from 3.8 g to 5.4 g, number of bolls ranged from 44 to 64, 2.5% span length from 26.7 mm to 33.6 mm, ginning out turn (GOT) ranged from 31.6% to 36.8%, micronaire values ranged from 4.1 to 5.1 and bundle strength from 21.0 g/tex to 24.8 g/tex. CCH 09 BGII (5.4 g) recorded highest boll weight followed by KCHH 2725 (5.3 g), whereas, maximum 2.5 % span length was observed in BUNNY BGII (33.6 mm) followed by SWCH 7677 BGII (32.7 mm). Highest bundle strength was recorded by Bunny BG II (24.8 g/tex) followed by SWCH 7525 BGII (23.8 g/tex). Maximum GOT was observed in PCHH 6 BGII (36.8 %) followed by CCH 03 BGII (35.8 %). It is clearly evident from this experiment that some Bt hybrids are really performing better both in terms of yield and fibre quality characters in this location.
Pages: 2564-2566 | 368 Views 54 Downloads
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How to cite this article:
Y Satish, KV Siva Reddy. Evaluation of Bt cotton hybrids for yield and fibre quality traits. Int J Chem Stud 2018;6(3):2564-2566.
