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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 3
First page : (410) Last page : (415)
Article doi: : http://dx.doi.org/10.18782/2320-5297

Influence of Dates of Sowing on Phenology and Yield Associated Traits in Rabi Sorghum Genotypes

Chaithra, V.*, D. S. Uppar**, Kiran, B. O., Biradar, B. D. and Hilli, J. S.

Department of Seed Science and Technology University of Agricultural sciences Dharwad, 580005
*Corresponding Author E-mail: chaithra1523@gmail.com
Received: 24.07.2017  |  Revised: 30.08.2017   |  Accepted: 7.09.2017  

 

 ABSTRACT

Field experiment was conducted to study the influence of dates of sowing on yield and productivity traits in four rabi sorghum genotypes during 2016-17 at Main Agricultural Research Station (MARS), Dharwad. The phenological results indicated that, the number of days to 50 per cent   flowering and complete flowering increased in S6  condition (79.30  and 85.74 days respectively). Genotype BJV-44 recorded significantly maximum number of days to 50 per cent flowering and complete flowering (76.06 and 84.89 days respectively). Further, panicle length was significantly higher under S6 condition (20.07 cm) followed by S5 (19.67 cm). Under S6 condition, reproductive phase coincided with higher temperature (>360C) resulting in reduced seed number per panicle (1007) while, maximum seeds per panicle was recorded under S3 (1311). Genotype MS 104-B recorded maximum panicle length (21.59 cm) while, genotype BJV-44 recorded significantly higher seed number (1266) compared to other genotypes. The yield and yield associated traits were decreased with delayed dates of sowing. Seed setting percent was significantly higher under S3 (78.95 %), while seed weight was recorded higher in S4 (59.63 g). Among the genotypes, BJV-44 recorded maximum seed weight and seed setting per cent (58.22 g and 79.13 %). The influence of dates of sowing resulted in reduced test weight and yield kg per ha under S6 condition (41.12 g and 841 kg ha- 1). Maximum test weight and seed yield was recorded under S3 (44.69 g and 1378 kg ha-1). Among the genotypes, BJV-44 recorded significantly higher test weight (44.24 g) and seed yield (1317 kg ha-1) followed by genotype M 35-1 (1139 kg ha-1). The experiment inferred that, genotype BJV-44 was found to be thermo-insensitive and higher reproductive efficiency compared to other genotypes. Thus, it may provide better source for breeding/developing heat tolerant genotypes in rabi sorghum.

Key words: Panicle length, Seed setting, Seed weight, Test weight, Yield

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article:Chaithra, V., Uppar, D.S., Kiran, B.O., Biradar, B.D. and Hilli, J.S., Influence of Dates of Sowing on Phenology and Yield Associated Traits in Rabi Sorghum Genotypes, Int. J. Pure App. Biosci. 6(3): 410-415 (2018). doi: http://dx.doi.org/10.18782/2320-7051.5297