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Yield and fibre quality components analysis in upland cotton (Gossypium hirsutum L.) under salinity

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Title Yield and fibre quality components analysis in upland cotton (Gossypium hirsutum L.) under salinity
 
Creator Dinakaran, E
Thirumeni, S
Paramasivam, K
 
Subject Genetics and Genomics
Agriculture-Farming, Production, Technology, Economics
 
Description Cotton being an important cash crop of India plays a distinguished role in energizing the economy of the country by
fetching appreciable amount of foreign exchange annually. The cotton production of country is improving
significantly but the yield per unit area is still lower than that of the other countries due to some biotic and abiotic
factors. Amongst the abiotic stresses, salinity is a serious threat next to drought. Keeping in view, the present study
was conducted to assess the salt tolerance of 32 popular upland varieties released for general cultivation between
1980 and 2001 in India. The study was carried out in normal as well as saline-alkaline condition; in which salinity
were created using bore well water irrigation and the average electrical conductivity level of bore well water is 3.10
ds/m. The 32 upland cotton genotypes under both salinity and normal conditions revealed high GCV and genetic
gain for number of bolls per plant, boll weight, lint yield per plant, 2.5 per cent span length, leaf area index, Na-K
ratio and seed cotton yield and these traits could be improved by simple selection. Correlation and path analysis
studies revealed that the seed cotton yield was highly influenced by lint yield per plant in both normal and salinealkaline
condition. Significant positive correlations exists between Bartlett's rate index with uniformity ratio, 2.5 per
cent span length with bundle strength, uniformity ratio with micronaire and elongation percent, specific leaf area
with leaf area index. These results clearly indicated that selection for any one of these traits might lead to
concurrent improvement of other traits as well as seed cotton yield. The characters boll weight (-0.347), ginning out
turn (-0.528), 2.5% span length (-0.312) and uniformity ratio (-0.440) registered high order negative direct effect on
seed cotton yield. This result further confirms the negative association between the quality and yield.
 
Publisher Scholars Research Library
 
Date 2012
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/6110/1/ABR_3_8_3910-3915_2012.pdf
Dinakaran, E and Thirumeni, S and Paramasivam, K (2012) Yield and fibre quality components analysis in upland cotton (Gossypium hirsutum L.) under salinity. Annals of Biological Research, 3 (8). pp. 3910-3915. ISSN 0976-1233