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Exploring influential plant traits for enhancing upland cotton yield under salt stress

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This research was conducted to explore genetic material that can yield better under salt stress conditions.The experiment was laid out using 27 upland cotton genotypes in a RCBD 2 factorial arrangement with two replications.Saline water (NaCl at 20 dS/m) was applied after satisfactory emergence was achieved.The crop was raised to maturity and data relating to yield,fiber quality and ionic traits were recorded.Analysis of variance showed significant variations in the germplasm.Plant height,bolls per plant,boll weight,GOT％,staple length,staple strength,K+ and K+/Na+ ratio under salinity stress showed a highly significant correlation with seed-cotton yield.The highest direct effect on seedcotton yield per plant was exhibited by bolls per plant and boll weight.The results from the correlation and path coefficient analyses revealed that although the K+/Na+ ratio had a strong positively significant association with seedcotton yield,its direct effect on the seed-cotton yield was negative and thus selection on the basis of K+/Na+ may not be fruitful.Hence,only indirect selection through bolls per plant and boll weight may be effective in increasing the seedcotton yield per plant under salinity stress.

cotton, genotypic correlationpath coefficientsyield traitsfibre traitsionic traits

Ghulam ABBAS、Tariq MANZOOR KHAN、Jehanzeb FAROOQ、Abid MAHMOOD、Rana Nadeem ABBAS、Wajad NAZEER、Amjad FAROOQ、Zuhair HASNAIN、Muhammad Naeem AKHTAR

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Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad, Pakistan

Cotton Research Institute, Ayub Agricultural Institute, Faisalabad, Pakistan

Department of Agronomy, University of Agriculture, Faisalabad, Pakistan

Cotton Research Station, Old Shujaabad Road, Multan, Pakistan

PhD Scholar Department of Agronomy, BZU, Multan, Pakistan

Pesticide Quality Control Laboratory, Multan, Pakistan

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2011

10.1007/s11703-011-1125-z

中国农学前沿
高等教育出版社

中国农学前沿

ISSN：1673-7334
年,卷(期)：2011.5(4)
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