GENETIC EVALUATION OF COTTON GENOTYPES FOR DROUGHT AND YIELD PARAMETERS

BALRAM BARAIYA¹*, VEENA SATYA², SUDIP RAY^3
1PMB Gujrati Science College, Devi Ahilya Vishwavidyalaya, Indore, 452001, Madhya Pradesh, India
²Department of Botany, SBN Govt. PG College, Barwani, Devi Ahilya Vishwavidyalaya, Indore, 452001, Madhya Pradesh, India
³PMB Gujrati Science College, Devi Ahilya Vishwavidyalaya, Indore, 452001, Madhya Pradesh, India
* Corresponding Author : baraiyaps@gmail.com

Received : 21-07-2018     Accepted : 28-07-2018     Published : 30-07-2018
Volume : 10     Issue : 14       Pages : 6769 - 6771
Int J Agr Sci 10.14 (2018):6769-6771

Keywords : Cotton, drought tolerance, heritability, genetic evaluation, genotypic coefficient of variation (GCV), phenotypic coefficient of variation (PCV)
Conflict of Interest : None declared
Acknowledgements/Funding : Author thankful to Cotton Research Station, Khanda for providing experimental field and lab facilities where we conducted filed research. Author also thankful to Devi Ahilya Vishwavidyalaya, Indore, 452001, Madhya Pradesh
Author Contribution : All author equally contributed

The aim of the present investigation is evaluation of twenty genotypes of American cotton (Gossypium hirsutum) for estimating the genetic variability, heritability and genetic advance besides, yield and yield components and drought tolerance trails during kharif 2016-17. The data revealed statistically significant variation regarding seed cotton yield (kg/ha) (1883.35) and boll per plant (44.0). Genotype, GSHB-185 was noticed maximum (3.85g) boll weight per plant. The data regarding drought tolerance parameters was shown that the highest value of chlorophyll a and total chlorophyll was found in genotype TCH- 1199 and relative water content in the genotype TSH-327. The highest value for Chlorophyll stability was recorded in genotypes L-1060. However, the estimates of genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) were found high for number of bolls plant-1 and boll weight (g) and drought tolerance parameters viz., chlorophyll b, leaf water potential, chlorophyll a and photosynthesis rate. The high heritability estimates were observed for yield and yield components viz., seed cotton yield plant-1, bolls plant-1 and boll weight and drought tolerance traits viz., relative water content, proline content, total chlorophyll and leaf water potential. Genetic analysis revealed that promising genotypes JK- 4 and TCH 1199 led as tolerant genotypes and could be used in future yield improvement for drought tolerance with high yield potential. This study will be useful for the development of new drought tolerant verities for enhancing cotton yield.

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