Gaikwad, A.R.Kornule, Nitin Umakant2019-09-112019-09-112019-05-3118481http://krishikosh.egranth.ac.in/handle/1/5810127309An experiment was conducted at the experimental farm of “Cottton Research Scheme”, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani during kharif, 2018 with a view to study the ‘Morpho-physiological analysis of cotton genotypes (G. hirsutum L.) under rainfed condition’. Sixteen promising genotypes along with six checks NH-615, NH-545, AKH 8828, PKV Rajat, Phule 0688 and Phule Yamuna were included in the present investigation. Observations were recorded on the Phenological characters viz., days to 50% flowering, days to First boll opening, days to50% boll opening , days to maturity, plant height, number of bolls per plant, Number of sympodia , number of monopodia,growth parameters (NAR, AGR,RGR, SLW, LAI), Proline content,SPAD chlorophyll content, character, 100 seed weight, Ginning (%), Boll weight, seed cotton yield per plot, Fiber quality parameters, fiber length , fiber strength and micronaire. The plant height was observed in range of 101.20cm (RHC-1307) to 125.50 cm (NH 677) at 150 DAS. At 60 DAS, genotype NH 677 recorded highest leaf area (15.48dm2) fallowed by RHC 1217(15.42dm2) and CNDTS 281 (15.39dm2). At 150 DAS NH-677 recorded highest leaf area (42.97dm2) fallowed by CNDTS-281 (41.50dm2) and RHC-1217(42.00dm2) as compare other genotypes. Genotype NH-677(21.50) and CNDTS-281(20.55) recorded statiscally significant difference for more number of symopodia per plant as compare to higher check Phule-0688(16.88). As regarding to the phenological parameters, Number of day to 50 % flowering differed significantly among all the genotypes studied. Genotypes NH-677 recorded less number days to 50% flowering (60.07) fallowed by RHC-1307 (60.86). Number of days for first boll opening showed significance difference in all genotypes. Genotype NH-677 recorded 83.55 days showing earliness as compare to other genotypes. There was no significant differences for 50 % boll opening among all genotypes studied. Genotype NH-677(139.36 day) and CNH-1111(139.60) showed earliness for days to 50% boll opening. Among the genotypes for days to maturity, NH-677 recorded (162.31) days fallowed by CNDTS-281 (163.17 days). Morpho-physiological characters studies, for relative growth rate, the genotype NH-677 (0.046) recorded highest RGR and CNDTS-281(0.022) lowest at 61-90DAS as compare to higher RGR check AKH-8828(0.038). Between 91-120 DAS Net assimilation rate differed significantly in genotype. NH-677 (0.035) recorded more NAR as compare to other and lower NAR was noticed in RHC-1306 (0.025). Absolute growth rate of NH-677 recorded highest AGR (1.302) and AKH-09-5 recorded lowest AGR (1.036) at 61-90 DAS as compare to other genotypes and checks. At 60 DAS leaf area index differed significantly in genotypes .NH677 recorded (0.86) more LAI as compare to other genotype and least was in CNH-1124 (0.66).as regard to specific leaf weight, At 60 DAS NH-677 (4.39), NH-678 (4.26) and CNH-1111(4.30) depicted statistically significant result as well as at 90 DAS NH-677(4.84) and CNDTS-281 (4.75) where as at 120 DAS CNH-1111(4.16) and at 150 DAS again NH-677(4.54) and CNDTS-281(4.49) found statistically significant over checks PKV Rajat (3.84), Phule 0688(4.47), AKH 8828 (3.78) and AKH-8828 (4.24) for 60 , 90, 120 and 150 DAS respectively. Proline content of genotypes, there was significant difference in all the genotypes studied. Genotype NH 677 (41.48) was recorded more proline as compare to other and least was observe in CNH 1142 (29.50). The data on SPAD chlorophyll recorded in different genotype studied at 60 DAS, there was significant difference in all the genotypes studied. The genotype NH-677 (46.00) was recorded highest SPAD chlorophyll as compare to other and least was observe in CNH-1142 (36.75). The data on specific Relative water content recorded at 60 DAS there was significant difference for RWC. The two genotypes NH-677(76.10) and CNDTS-281 (76.83) depicted statistically significant RWC value as compare to higher value check AKH-8828 (72.06). At 90 DAS same results were found, NH-677 (78.03) and CNDTS-281(79.00) showed statistically significant result for RWC as compare to check Phule Yamuna (72.62). At 90 DAS four genotypes NH-677(82.57), RHC-1217(78.43), NH-678(76.24) and CNDTS-281(80.78) depicted statistically significant result as compare to higher check AKH-8828 (68.07). The Yield and yield component data revealed that Number of bolls per plant, genotype NH 677 (22.54) was recorded maximum bolls per plant fallowed by CNDTS 281(22.02), CNH 1111 (21.76), NH 678 (20.81) and NH 635 (20.03). NH-677 (4.17) recorded statistically significant boll weight as compare to other genotypes. Genotype NH 678 recorded 3.99 g, CNDTS 281 (3.94) and CNH 1111 (3.90g) boll weight. The four genotypes viz., NH 677(1650g), NH 678(1250g), RHC 1217 (1450g) and CNH 1111 (1210g) depicted statistically significant seed cotton yield per plot as compare to higher yield check NH-615 (1170g). The genotype NH 677 (38.85%) recorded maximum ginning out turn and100 seed weight of (6.70). The data on fibre quality parameter recorded the promising genotype CNH 1142 (29.74) as fibre length, genotypes viz., CNH-1124 (3.44), CNH-1142 (3.64) and CNH-2076 (3.70) as micronair value and the genotype CNH 1142 (21.9g/tex) for maximum strength. Thus in present studies, genotype NH 677, RCH 1217, CNDTS 281 and CNH 1111 were found promising for the morho physiological analysis under rainfed condition.ennullThesis