PHYSIOLOGICAL EVALUATION OF THE SELECTED MUNGBEAN GENOTYPES FOR FRUIT SET
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Date
2019-08-06
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
Mungbean [Vigna radiata (L.) Wilczek] is an important crop in India and serves as a
major source of dietary protein. Apart from the nutrition quality, crop performance is
very low due to some of the physiological factors viz., insufficient partitioning of
assimilates, poor pod setting due to high flower abscission. Thus a study was conducted
at GKVK, Bengaluru to assess the influence of hormones, humic substances and urea
spray treatments on flower drop, fruiting efficiency and seed yield. Physiological
screening of 22 mungbean genotypes revealed that EC693358, C6-11-4 and C3-11-6
were high yielding genotypes with lower fruiting efficiency and VC3960-88, EC693362
and EC693363 were low yielding genotypes with higher fruiting efficiency. Results
indicated the inverse relation between seed yield and fruiting efficiency. The contrasting
genotypes for fruiting efficiency and seed yield were assessed with different foliar
treatments which include hormonal mixture (NAA 20 ppm + GA 10 ppm + CK 5 ppm),
brassinosteroid (0.1 ppm), planofix (0.5 ml/l), humic substances (3 ml/l) and 1% urea
spray under both pot and field conditions. Significant interaction was observed between
different foliar treatments and genotypes. Among the contrasting genotypes C6-11-4
showed highest total number of flowers, pod number and seed weight in both pot and
field conditions. Among the treatments humic substances followed by hormonal mixture
treatments showed highest total number of flowers, pod number and seed weight in both
pot and field conditions. The C6-11-4 genotype under humic substances and hormonal
combination (NAA+GA+CK) performed better and yielded high.