Vol. 7, Issue 3 (2019)
Diallel analysis numerical approach for growth, yield and quality traits of pumpkin (Cucurbita moschata Duch. Ex. Poir)
Author(s): V Krishnamoorthy and P Marxmathi
Abstract: Diallel analysis study was conducted at Department of Horticulture, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Madurai during 2016 according to Hayman on growth, yield and quality traits of pumkin. Six genotypes of pumpkin viz. P1: Acc.No. MDU CM23-Thirumangalam local, Madurai district, P2: Acc.No. MDU CM28-Oddanchatram local, Dindugul district, P3: Acc.No. MDU CM29-Harur local, Dharmapuri district, P4: Acc.No. MDU CM12-Department of Horticulture, AC &RI Madurai, P5: Acc.No. MDU CM1-Attur local, Salem district, P6: Acc.No. MDU CM31-Rajapalayam local, Virudhunagar district were used to study the gene action underlying the inheritance of various quantitative and qualitative traits. The six parents and their 30 F1 hybrids were sown in the field in randomized block design with two replications. The various growth, yield and quality traits were recorded. The vine length, number of primary branches, sex ratio, days to first harvest, number of fruits per vine, flesh thickness, number of seeds per fruit, total soluble solids, beta carotene and dry matter content of fruits had both additive and dominance gene action. The days to first male flower, days to first female flower, node to first male flower, node to first female flower, moisture content indicated the presence of dominance gene action. The average fruit weights, fruit length, fruit diameter, yield per plant traits were influenced by additive gene action. The recessive alleles were more pronounced in vine length, days to first male flower, number of fruits per vine, average fruit weight, fruit length, fruit diameter, total soluble solids and dry matter content. The dominant alleles were more pronounced in number of primary branches, days to first female flower, node to first male flower, sex ratio, days to first harvest, flesh thickness, number of seeds per fruit, yield per plant, beta carotene and moisture content traits. The traits vine length, days to first female flowers, node to first male flower, sex ratio, number of fruits per vine, fruit diameter, flesh thickness, number of seeds per fruit, total soluble solids, beta carotene and moisture content were controlled by single block of genes as they had KD/KR ratio more than one. The traits number of primary branches, days to first male flower, average fruit weight, fruit length, yield per vine, and dry matter content were controlled by more than group of gene as they recorded KD/KR ratio less than one.
Pages: 2548-2553 | 472 Views 110 Downloads
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How to cite this article:
V Krishnamoorthy, P Marxmathi. Diallel analysis numerical approach for growth, yield and quality traits of pumpkin (Cucurbita moschata Duch. Ex. Poir). Int J Chem Stud 2019;7(3):2548-2553.
