GENETIC DIVERGENCE FOR YIELD AND YIELD ATTRIBUTES IN VEGETABLE AMARANTH (Amaranthus spp.) GENOTYPES

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dc.contributor.advisorDr. K. RAVINDER REDDY
dc.contributor.authorN. TEJASWINI
dc.date.accessioned2019-09-11T09:46:58Z
dc.date.available2019-09-11T09:46:58Z
dc.date.issued2016-10-25
dc.descriptionThe analysis of variance of RBD revealed highly significant differences among the genotypes for all the 19 characters studied this indicated the availability of variability among the genotypes studied. The D2 analysis was carried out for nineteen characters, which partitioned the twenty seven genotypes into four clusters. The maximum divergence was observed between cluster III and IV indicated that the genotypes of these clusters were highly divergent. Total foliage yield per plant, folic acid, ascorbic acid, total chlorophyll content, plant height at 60 DAS, iron content, moisture content, protein content and carotenoids had more contribution to total divergence. Hence, selection for divergent parents based on these characters will be useful for heterosis breeding in vegetable amaranth.en_US
dc.description.abstractIn the present investigation entitled “Genetic divergence for yield and yield attributes in vegetable amaranth (Amaranthus spp.) genotypes”, a set of 27 genotypes comprising of 25 germplasm lines and two checks of vegetable amaranth (Amaranthus tricolor L.) were evaluated in a Randomized Block Design with three replications at the PG Research Block, Department of Vegetable Science, College of Horticulture, Rajendranagar, Hyderabad during rabi, 2016 for nineteen characters related to foliage yield and its attributes so as to identify the horticulturally superior genotypes. The analysis of variance of RBD revealed highly significant differences among the genotypes for all the 19 characters studied this indicated the availability of variability among the genotypes studied. The D2 analysis was carried out for nineteen characters, which partitioned the twenty seven genotypes into four clusters. The maximum divergence was observed between cluster III and IV indicated that the genotypes of these clusters were highly divergent. Total foliage yield per plant, folic acid, ascorbic acid, total chlorophyll content, plant height at 60 DAS, iron content, moisture content, protein content and carotenoids had more contribution to total divergence. Hence, selection for divergent parents based on these characters will be useful for heterosis breeding in vegetable amaranth. The values of PCV and GCV for plant height, stem diameter, number of branches per plant, leaf area index, number of leaves per plant, leaf weight per plant, leaf/stem ratio each at 30, 60 and 90DAS, stem weight per plant (30 and 60 DAS), leaf length (30 and 90 DAS), total foliage yield per plant, total chlorophyll content, carotenoids, protein content, ascorbic acid and oxalate content were high indicated that the variability observed in 27 genotypes was high. High heritability coupled with high genetic advance for plant height, stem diameter, stem weight per plant, number of branches per plant, leaf length, leaf width, leaf area index, number of leaves per plant, leaf weight per plant, leaf/ stem ratio each at 30, 60 and 90 DAS, total foliage yield per plant, total chlorophyll content, carotenoids, protein content, ascorbic acid, oxalate content, iron content and folic acid indicated the involvement of additive gene action and thus the chances of fixing by selection are more to improve such traits. Correlation coefficient analysis revealed highly significant positive association of plant height, stem diameter, stem weight per plant, leaf length, leaf width, leaf area index, leaf weight per plant, leaf/stem ratio at 30, 60 and 90 DAS, total chlorophyll content, protein content, ascorbic acid, moisture content, iron content and folic acid with foliage yield suggesting that selection based on these characters will be useful in increasing yield per plant in vegetable amaranth. Path coefficient analysis revealed that plant height (60 DAS), stem diameter (60 DAS), stem weight per plant (30 DAS), leaf length (60 and 90DAS), leaf width (60 and 90 DAS), leaf weight per plant (30, 60 and 90 DAS), leaf/stem ratio (30 and 90 DAS), protein content, ascorbic acid and folic acid had positive direct effect on foliage yield and also showed positive significant correlation with foliage yield indicated that these traits are more reliable for selection for genetic improvement of foliage yield. On the basis of mean performance, five genotypes viz., IC-522214, IC- 536718, IC-536712, IC-536699 and IC-536728 has been identified as promising genotypes with particular reference to the characters viz., leaf length, leaf width, leaf area index, leaf weight per plant, total foliage yield per plant, total chlorophyll content, protein content, ascorbic acid, moisture content, iron content and folic acid. So, these genotypes are considered as the promising and would be used as parental source in breeding programme.en_US
dc.identifier.citationSri Konda Laxman Telangana State Horticultural University, Rajendranagar, Hyderabad-30en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810127379
dc.keywordsYIELD AND YIELD ATTRIBUTES IN VEGETABLE AMARANTHen_US
dc.language.isoenen_US
dc.pages1-198en_US
dc.publisherCollege of Horticulture, Rajendranagar, HYD-30en_US
dc.research.problemOn the basis of mean performance, five genotypes viz., IC-522214, IC- 536718, IC-536712, IC-536699 and IC-536728 has been identified as promising genotypes with particular reference to the characters viz., leaf length, leaf width, leaf area index, leaf weight per plant, total foliage yield per plant, total chlorophyll content, protein content, ascorbic acid, moisture content, iron content and folic acid. So, these genotypes are considered as the promising and would be used as parental source in breeding programme.en_US
dc.subVegetable Scienceen_US
dc.subjectnullen_US
dc.themeThe analysis of variance of RBD revealed highly significant differences among the genotypes for all the 19 characters studied this indicated the availability of variability among the genotypes studied.en_US
dc.these.typeM.Scen_US
dc.titleGENETIC DIVERGENCE FOR YIELD AND YIELD ATTRIBUTES IN VEGETABLE AMARANTH (Amaranthus spp.) GENOTYPESen_US
dc.typeThesisen_US
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