STUDY OF FLOWERING BEHAVIOR OF MALFORMED VS NORMAL MANGO VARIETIES IN SUBTROPICAL REGION OF INDIA

M.K. VISHWAKARMA¹*, A. BAJPAI², C. KOLE^3
1Borlaug Institute for South Asia, Jabalpur, Madhya Pradesh, 482005, India
²Department of Genetics and Plant Breeding, Sam Higginbottom University of Agriculture, Technology and Sciences, Pryagraj, 211007, Uttar Pradesh, India
³Department of Genetics and Plant Breeding, Sam Higginbottom University of Agriculture, Technology and Sciences, Pryagraj, 211007, Uttar Pradesh, India
* Corresponding Author : manishvis@gmail.com

Received : 16-03-2019     Accepted : 27-03-2019     Published : 30-03-2019
Volume : 11     Issue : 6       Pages : 8134 - 8136
Int J Agr Sci 11.6 (2019):8134-8136

Keywords : Flower opening, Sex ratio differences, Normal and Malformed cultivars
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to Division of Crop Improvement and Biotechnology, ICAR-Central Institute for Sub-tropical Horticulture, Lucknow, Uttar Pradesh 226101, India. Also thankful to Department of Genetics and Plant Breeding, Sam Higginbottom University of Agriculture, Technology and Sciences, Pryagraj, 211007, Uttar Pradesh
Author Contribution : All authors equally contributed

Flowering is a crucial component with the view for mango production. Four mango varieties were studied for the flowering behavior at Central Institute for Subtropical Horticulture, Lucknow, and Uttar Pradesh. The data on Varietal response of Normal and Malformed cultivars at prebloom stage revealed that the flowers were more in malformed panicles. The blossom bud initiation and panicle length elongation study of Amrapali (Normal Vs. Malformed) showed a high number of flowers emergence in mid of march in normal and malformed panicles. Albeit, in malformed panicles, similar bursts of flower opening were recorded two more times. Similarly, a study of pattern on panicle length revealed that the growth of normal panicles was very fast initially and attained up to 16 cm length. During the corresponding time, panicle development (increase in length) in malformed samples was slow. The total number of flowers was more in malformed panicles in comparison to normal. Likewise, significantly large variations were recorded in number of male: hermaphrodite flowers, 3.5:1 in normal while in malformation ratio was 14:1. The results concluded that in a subtropical region, flowering pattern of mango cultivars response differently. Due to discontinuous bursts of flower opening, sex ratio differences were high in malformed panicle.

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