Induction of Seed Dormancy in Green Gram (Vigna radiata L. Wilczek) Menedal Sneha M.*, Vyakaranahal B. S., Ashok Department of Seed Science and Technology, University of Agricultural Sciences, Dharwad-580 005, Karnataka, India *email: snehammenedal@gmail.com and npbashokreddy@gmail.com
Online published on 15 December, 2016. Abstract The field and laboratory experiments were conducted to study the seed dormancy induction in green gram genotypes during kharif 2014–15 at MULLaRP Scheme, University of Agricultural Sciences, Dharwad. Storage studies were carried out to test the artificially induced seed dormancy period in storage in the seed research laboratory of National Seed Project, Dharwad, Karnataka to study the effect of foliar application of dormancy inducing chemical on three green gram genotypes (DGG-1, DGGV-2 and Selection 4). Two foliar spray of maleic hydrazide (1000, 2000 and 3000ppm) paclobutrazol (100, 200 and 300ppm) and PEG-6000 (18 and 26%) atflowering and pod initiation stage in DGG-1, DGGV-2 and Selection 4. It recorded higher dormant seed (65%) and the lowest germination (35%), root length (9.82 cm), shoot length (9.0 cm), seedling vigour index (655), seedling dry weight (46.4 mg) with MH @1000ppm in DGGV-2. It was found that two foliar spray of MH at 1000ppm at flowering and pod initiation stage has induced dormancy in green gram genotype, DGGV-2 up to 35 days and protected the seed from in situ germination due to untimely rains at the time of harvest. Top Keywords Dormancy, Green gram, Maleic hydrazide, Paclobutrazol, PEG 6000, Pre-harvest Sprouting. Top |