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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 6
First page : (855) Last page : (863)
Article doi: http://dx.doi.org/10.18782/2320-7051.6085

Development of Bt Cotton (Gossypium hirsutum L.) Hybrids Amenable for High Density Planting

S. L. Koreka, Sandeep Mankare and Gowtham Prakash*
*Department of Botany, Yeshwant Rao Chavan College, Tuljapur, Osmanabad, Mahrashtra-413 601
Affiliated to, Dr. BAMU, Aurangabad, Maharashtra -431 004
*Corresponding Author E-mail: gowthamgpb@gmail.com
Received: 26.11.2017  |  Revised: 20.12.2017   |  Accepted: 23.12.2017  


Breeding investigation was taken up to evolve and assess hybrids for high density planting in Bt cotton in Line X Tester mating design involving parents with diverse plant architecture. Randomized complete block design (RCBD) with three replicates was adopted to ascertain the performance of hybrids under conventional density (CDP) and high density planting (HDP) in the year 2015-16. Analaysis of variance (ANOVA) revealed significant differances among the genotypes which include nine parents and 20 test crosses for maturity, plant architecture, yield and yield attributing traits under both the planting densities. Ideal ideotype of hybrid for high density planting (HDP) found to be of open to semi open plant architecture with determinant growth habit. Considering the parental status of most promising hybrid combinations it is quite evident that to evolve most suitable hydrids for high density planting (HDP) at least one of the parents must be of open plant type with determinant plant growth habit, whereas second parent can be of varied plant type and growth pattern provided there is nice complementation with the first parent. Test cross combinations SC1104 X 1205, SC1134 X 1205 and SC1112 X 1205 have been identified as most suitable for economic yield and other essential traits for high density planting (HDP).

Key words: Line X Tester, Bt cotton, Ideotype, Plant architecture, High density planting

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

Cite this article: Koreka, S.L., Mankare, S. and Prakash, G., Development of Bt Cotton (Gossypium hirsutum L.) Hybrids Amenable for High Density Planting, Int. J. Pure App. Biosci.5(6): 855-863 (2017). doi: http://dx.doi.org/10.18782/2320-7051.6085