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Exploring influential plant traits for enhancing upland cotton yield under salt stress |
Ghulam ABBAS1(), Tariq MANZOOR KHAN1, Jehanzeb FAROOQ2(), Abid MAHMOOD2, Rana Nadeem ABBAS3, Wajad NAZEER4, Amjad FAROOQ2, Zuhair HASNAIN5, Muhammad Naeem AKHTAR6 |
1. Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad, Pakistan; 2. Cotton Research Institute, Ayub Agricultural Institute, Faisalabad, Pakistan; 3. Department of Agronomy, University of Agriculture, Faisalabad, Pakistan; 4. Cotton Research Station, Old Shujaabad Road, Multan, Pakistan; 5. PhD Scholar Department of Agronomy, BZU, Multan, Pakistan; 6. Pesticide Quality Control Laboratory, Multan, Pakistan |
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Abstract 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 seed-cotton 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 seed-cotton 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 seed-cotton yield per plant under salinity stress.
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Keywords
cotton
genotypic correlation
path coefficients
yield traits
fibre traits
ionic traits
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Corresponding Author(s):
ABBAS Ghulam,Email:abbas1434@yahoo.com; FAROOQ Jehanzeb,Email:jehanzeb1763@hotmail.com
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Issue Date: 05 December 2011
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