EVALUATION OF AMERICAN COTTON GENOTYPES FOR MORPHO-PHYSIOLOGICAL AND OIL PARAMETERS.
Loading...
Date
2019-09-11
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra.
Abstract
An experiment was conducted on “Evaluation of American cotton Genotypes for morpho-physiological and Oil parameters”, at the experimental field of Cotton Research Unit, Dr. PDKV Akola, during Kharif season of 2016-17 and 2017-18.The experiment was laid out in randomized block design with three replications and twenty seven treatments. The objectives of the experimental trial were: 1) to study the morpho-physiological and yield attributes of American cotton genotypes. 2) To study the oil parameters of American cotton genotypes.
The observations were recorded on various morphological parameters viz., plant height (cm), leaf area (dm2), Total dry matter (g), physiological observations like Leaf area index, relative water content(%), Specific leaf weight (g/dm2), relative growth rate (RGR) (g/g/day), Total chlorophyll content (mg/g) and Absolute growth rate (AGR) (g/day) were recorded at 60, 90, 120 DAS and at harvest. Whereas, yield and oil parameters were also recorded per replication and treatment wise.
American cotton (G. hirsutum) AKH-1303 followed by AKH-2013-2 and AKH-2013-1 recorded maximum seed cotton yield.
Genotype AKH-1303 recorded more plant height (122.60 cm), leaf area (46.22 dm2), total dry matter (77.21 g), leaf area index (2.07), specific leaf weight (0.88g/dm2) over the other genotypes whereas, AKH-1301 recorded significantly more number of leaves (49.30) ) and more total chlorophyll content (1.39 mg/g) over the other genotypes. The check PKV-Rajat recorded more relative water content.
With respect to yield and yield attributes, genotype, AKH-8660 took minimum days to square initiation (43.20 days) and IC-359088 (47.42 days) recorded maximum days to square initiation. AKH-31 (55 days) recorded minimum number of days to 50 % flowering over other genotypes. The minimum number of days to 50 % boll bursting was found in genotype AKH-2012-9 (109.83 days). Genotype AKH-1303 recorded significantly highest number of sympodial branches (15.73), higher number of bolls (16.47), maximum seed cotton yield (62.89 g/plant), lint yield (22.12 g/plant), seed index (10.35 g). The check AKH-8828 (41.31%) recorded best ginning percent and AKH-2012-9 recorded significantly highest boll wt. (3.12 g).
Genotype AKH-081 (check) recorded maximum oil content (21.60%), while AKH-8660 showed minimum oil content (12.6%).
Genotype AKH-976 recorded maximum erucic (0.84%), and linoleic acid (52.64%). Significantly highest arachidic (0.42%) and stearic acid (3.96%) were observed in genotype check variety PKV-Rajat. Significantly maximum myristic (0.90%) and palmitoleic acid (0.58%) were registered in genotype AK-32.Genotype GV-22 recorded highest palmitic acid (23.96%).Highest oleic acid (22.69%) and linolenic acid (0.31%) were recorded in AKH-8828 and AKH-1302 respectively.
Analysis of variance for pooled data indicated that there were significant differences among the twenty seven genotypes.
The values of PCV (Phenotypic coefficient of variation) were higher than GCV (Genotypic coefficient of variation) indicating the importance of environment on the expression of these characters. The seed cotton yield, oil and oil quality parameters showed high heritability along with high genetic advance which would be rewarding for improvement in these characters through selection.
The seed cotton yield per plant exhibited positive and significant phenotypic and genotypic correlation with plant height, leaf area , total dry matter, number of days to square initiation, number of monopodia, number of sympodia, number of bolls, boll weight and lint yield. The results indicated that these characters are more related genetically.
Description
The present investigation was carried out over 2 season (kharif 2016-2017, kharif 2017-18,) in which 27 genotypes of G.hirsutum were used for evaluation by using Randomized Block Design at the field of Cotton Research Unit, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, to study their morpho-physiological and oil parameters.
Keywords
Citation
YADAV, YOGITA MANOHAR. (2019). Evaluation of american cotton genotypes for morpho-physiological and oil parameters. Department of Agricultural Botany. Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. Ph. D. (2019). Print. xvi, 206p. (Unpublished).