PLANT GROWTH REGULATORS INDUCED SOURCE SINK RELATIONSHIP ON PRODUCTIVITY OF GREENGRAM (Vigna radiata L.)
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Date
2016-10-30
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University of Agricultural Sciences Raichur
Abstract
A field experiment was conducted at Agricultural Research Station, Kalaburagi,
University of Agricultural Sciences, Raichur during kharif 2015 to study the effect of
plant growth regulators on source and sink relationship and its impact on productivity of
greengram (Vigna radiata L.). Off the thirteen plant growth regulator treatments, NAA 40
ppm recorded significantly higher seed yield (1264 kg ha-1). The improvement yield may
be attributred to increased sink size and was realized through increased number of pods
per plant (16.0), pod weight per plant (10.61 g), number of seeds per pod (9.55), pods per
peduncle (4.04), 100 seed weight (5.73 g), seed yield per plant (7.59 g plant-1). Further,
there was also concurrent improvement in source size and was expressed interms of
favourable improvement in growth parameters with NAA 40 ppm application at 60
DAS, viz., leaf area per plant(12.37 dm2 plant-1), leaf area index (LAI) (4.12) and plant
height (50.6cm).
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