GENE ACTION STUDIES FOR BIOCHEMICAL TRAITS IN PUMPKIN (Cucurbita moschata Duch. Ex. Poir)

VIMLESH KUMAR¹, D.P. MISHRA²*, G.C. YADAV³, UMESH BABU^4
1Department of Vegetable Science, Narendra Dev University of Agriculture and Technology, Kumarganj, Faizabad, 224229, Uttar Pradesh
²Department of Vegetable Science, Narendra Dev University of Agriculture and Technology, Kumarganj, Faizabad, 224229, Uttar Pradesh
³Department of Vegetable Science, Narendra Dev University of Agriculture and Technology, Kumarganj, Faizabad, 224229, Uttar Pradesh
⁴ICAR-Krishi Vigyan Kendra, Sant Kabir Nagar, Narendra Dev University of Agriculture and Technology, Kumarganj, Faizabad, 224229, Uttar Pradesh
* Corresponding Author : devendra.veg@gmail.com

Received : 03-04-2018     Accepted : 07-04-2018     Published : 15-04-2018
Volume : 10     Issue : 7       Pages : 5687 - 5689
Int J Agr Sci 10.7 (2018):5687-5689

Keywords : Quality Traits, Pumpkin, β-Carotene
Conflict of Interest : None declared
Acknowledgements/Funding : Author thankful to Narendra Dev University of Agriculture and Technology, Kumarganj, Faizabad, 224229, Uttar Pradesh
Author Contribution : All author equally contributed

The present experiment was conducted with aim to know the nature of inheritance of biochemical traits viz., ascorbic acid (mg/100g), reducing sugars (%) non-reducing sugars (%), total sugars (%), dry matter content, total soluble solids, β-carotene (mg/100g). The fifteen F1 hybrids developed through the diallel mating excluding reciprocals with the using of six parents. Highly significant values of additive D ̂ and dominance (H ̂1 and H ̂2) effects of components were observed for most of the traits studied in all three seasons (E1, E2, E3) except the values of D ̂ for total sugars, reducing sugars and ascorbic acid in all three seasons. Average degree of dominance revealed the presence of over dominance for all traits in all three seasons (E1, E2, E3). The proportions of genes (H ̂2 /4 H ̂1) in the parents were less than 0.25 for all the traits indicating asymmetrical distribution of alleles at loci showing dominance in all three seasons (E1, E2, E3). In general, the proportions of dominant and recessive genes in parents [(4 D ̂, H ̂1 )1/2 + F ̂ / (4 D ̂, H ̂1 )1/2 -( F) ̂] were more than unity with positive F ̂ value for all the traits in all three seasons indicating major contribution of dominant genes. The ratio of (h ̂2 / H ̂2) which estimates the number of gene groups revealed that atleast one gene group was involved in the inheritance for total soluble solids during all three seasons. While, for dry matter content, total sugars and reducing sugars exhibited similar number of gene group only during E2 and rest of traits showed involment of less than one gene group.

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