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STUDIES ON GENETIC VARIABILITY IN SOME NECTARINE [Prunus persica (L.) Batsch var nucipersica] CULTIVARS FOR DIFFERENT HORTICULTURAL TRAITS

KrishiKosh

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Title STUDIES ON GENETIC VARIABILITY IN SOME NECTARINE [Prunus persica (L.) Batsch var nucipersica] CULTIVARS FOR DIFFERENT HORTICULTURAL TRAITS
 
Creator SHARMA, NIVEDITA
 
Contributor DOGRA, R.K.
 
Subject ---
nectarine [Prunus persica L. Batsch var, nucipersica],genetic variability
 
Description ABSTRACT
The present investigation entitled "Studies on genetic variability in some nectarine [Prunus persica L. Batsch var nucipersica] cultivars for different horticultural traits" was carried out at the Model Farm, Directorate of Research, Dr Y S Parmar University of Horticulture and Forestry, Nauni, Solan (H P) during 2014-16 with the objective of studying the variability in different nectarine cultivars and to study the association between yield and its dependent variables. Five cultivars of nectarine namely, Mayfire, Sunrise, Silver King, Snow Queen and Spring Bright were evaluated for their plant growth, floral, fruiting and chemical characteristics. Analysis of variance showed significant differences among all the genotypes for all the characteristics under study viz., tree height, tree spread, trunk girth, tree volume, annual shoot growth, leaf area, date of opening of first flower, date of full bloom, date of opening of last flower, duration of flowering, flower intensity, fruit set, time of maturity, days from full bloom to harvest, fruit size , fruit shape, fruit color, fruit weight, fruit volume, fruit firmness, stone size, stone weight, pulp to stone ratio, yield per tree, yield efficiency, total soluble solids, titratable acidity, total sugars, reducing sugars, non-reducing sugars and sugar:acid. The genotype Snow Queen recorded highest yield and performed better for other important horticultural traits among different genotypes. Spring Bright was found to be the dwarfest among the studied genotypes. These may be suggested for cultivation in mid-hill conditions of Himachal Pradesh. High heritability coupled with high genetic gain was obtained tree volume indicating some scope for their improvement through selection. High heritability coupled with moderate genetic gain was obtained for fruit yield per tree, fruit volume, trunk girth, stone length, total soluble solids, total sugars, fruit firmness, tree spread, yield efficiency, sugar-acid ratio and reducing sugars. Hence, selection can prove effective for improvement in fruit yield and other traits. A highly significant and positive phenotypic and genotypic correlations of yield were found with tree spread, tree volume, fruit length and fruit weight. Maximum positive direct effect cited towards yield were contributed by fruit weight, tree spread, stone length, flower intensity, stone weight, total soluble solids, number of days from full bloom to maturity, pulp to stone ratio, tree height, duration of flowering, fruit set and trunk girth.
 
Date 2016-11-10T12:19:40Z
2016-11-10T12:19:40Z
2016
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/84833
 
Language en
 
Relation M.Sc.;
 
Format application/pdf