Effect of plant growth regulator treatments on the growth and lateral root formation in soybean sprouts, 3; Effect of plant growth regulator treatments on the root primordia, lateral root formation, water retaining ability and ABA content in soybean sprouts
1989
Kang, C.K. | Lee, K.H. | Park, Y.S. (Rural Development Administration, Suwon (Korea R.). Agricultural Chemicals Research Institute)
IAA showed no significant growth of root primordia and then lateral root emerged at 2 days after IAA treatment. BA treatment, however, strongly inhibited the formation of root primordia and a few lateral roots, if any, emerged about 5 days after treatment. Treatment of BA and Indol-B on the water retaining ability sampled 1, 3, 5 days after chemical treatment was apparent on the soybean sprouts sampled 5 days after treatment while the difference among the treatments was negligible when sampled 1 and 3 days after treatment. BA stimulated ABA content in the hypocotyl while inhibited ABA content in the root of soybean sprouts. ABA may relate with water retaining ability. Soaking the soybean seeds to several seed disinfectant chemical solution had no effect on the growth and elongation of soybean sprouts. It can be recommended that container of soybean sprouts should be shut tight during growing period except irrigation because the ethylene accumulation in the container may stimulate hypocotyl swelling and inhibit length of soybean sprouts
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