EFFECT OF BLOOMING DATES ON YIELD, YIELD CONTRIBUTING AND FIBRE QUALITY PARAMETERS AND INTROGRESSION OF FIBRE QUALITIES IN Gossypium spp.
Loading...
Date
2003
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of Agricultural Sciences, Dharwad
Abstract
Cotton is a long duration crop. The flowering starts generally after 45 to 50 days and continued upto 150 days after sowing. It indicates nearly 100 or more than 100 days are involved only for kapas production. So, the boll development period would subject to different macro or micro environmental changes. They will thus affect the yield of seed cotton and its quality. Therefore, the present study was aimed at screening cotton varieties which are less influenced by environmental factors during flowering to harvesting by way of studying effect of blooming dates on kapas yield and quality of fibre properties. Other study carried out was with an objective of identifying strong and long fibred G. hirsutum cotton. The present study was undertaken during kharif 2001-02 at Agricultural Research Station, Oharwad. The effect of blooming dates on yield and fibre properties was carried out in advance generation genetic lines belonging to G. hirsutum, G. arboreum and G. herbaceum. Selection of recombinant lines for superior fibre properties was carried out in F4 generation interspecific cross, DCH-32. Among G. hirsutum lines, CPD-431 and CPD-755 showed insignificant difference between means of first four weeks and second four weeks for number of flowers per plant, boll weight, ginning outturn and lint index to indicate their stability or their lesser sensitiveness to micro-climatical changes. Similarly, PA-304 and GAM-69 among the G. arboreum lines and DDhc-13 in G. herbaceum lines have respectively showed insignificant difference between the means of first four weeks and second four weeks for number of flowers, boll weight, ginning outturn, seed index and number of flowers, boll weight, seed cotton yield and lint index to indicate their lesser sensitiveness to micro-climatical changes. Recombinant G. hirsutum lines with superior fibre properties from G. barbadense were obtained. They recorded 30 - 33 mm fibre length with fibre strength of 22 - 24 g per tex.
Description
Keywords
null
Citation
No . of references 56