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Standardization of planting ratio and staggered sowing of male parent in NHH-44 Bt. Cotton hybrid seed production

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Title Standardization of planting ratio and staggered sowing of male parent in NHH-44 Bt. Cotton hybrid seed production
 
Creator Shivakant.Sopanroa.Patil
 
Contributor M.R.Eshanna
 
Subject Seed Science And Technology
 
Description An investigation was carried out for standardization of two planting ratio (2:1 and 4:1
female to male rows) and five staggered sowing of male parent in NHH-44 Bt. cotton hybrid
seed production at Agricultural Research Station, Dharwad during the kharif season 2007.
The planting ratio of 2:1 recorded higher number of flowers crossed (95.40), crossed
bolls per plant (33.92) and seed yield (627 kg/ha) compare to 4:1 planting ratio (87.81, 32.36,
953 kg and 566 kg, respectively). The 4:1 planting ratio recorded higher seed weight per boll
(2.09 g), seed index (8.81), germination (80.40%) and seedling vigour index (2621)
compared to 2:1 planting ratio.
Among the staggered planting, staggered sowing of male (25%) first male sowing,
100% female + 25% male seeds were sown 7 days after first male sowing, 50% male seeds
were sown 7 days after second male sowing recorded higher number of flower crossed
(96.27), crossed boll per plant (34.80), seed cotton yield (1026 kg/ha), and seed yield (650
kg/ha) compared to all other staggered sowing treatments and also staggered sowing of male
(25%) first male sowing, 100% female + 50% male seeds were sowing 10 days after first
male sowing, 25% male seeds were sown 7 days after second male sowing recorded higher
seed weight per boll (2.14 g), seed index (8.88), germination (80.67%), seedling vigour index
(2668) compared to all other staggered sowing treatments. The planting ratio of 2:1 in
combination with staggered sowing of (25% first male sowing, 100% female + 25% male to
be sown 7 days after first male sowing, 50% male to be sown 7 days after second male
sowing recorded higher number of flower crossed (99.90), crossed bolls per plant (36.83) and
seed yield (692 kg/ha) compared to 4:1 planting ratio with other staggered sowing treatments.
 
Date 2016-10-27T18:59:10Z
2016-10-27T18:59:10Z
2008
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/82629
 
Format application/pdf
 
Publisher UAS, Dharwad