Asparagine이 水稻 幼苗期 耐鹽性 향상에 미치는 영향

• 영문명: Effect of asparagine on enhancement of salt tolerance at seedling stage in rice
• 발행기관: 한국육종학회
• 저자명: 권태호(Tae Ho Kwon) 김경아(Kyoung Ah Kim) 류점호(Jum Ho Ryu)
• 간행물 정보: 『한국육종학회지』Vol.28 No.2, 116~122쪽, 전체 7쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 1996.06.30

영문 초록

This study was designed to examine whether salt tolerance was enhanced in rice by exogenous asparagine. Germination and the establishment on sterile seedlings were increasingly inhibited by NaCl concentrations from 40 to 120 mM. At 200 mM NaCl, plant growth of wild type was completly blocked. Seedling establishment was prevented at 20 mM asparagine. At lower concentration, exogenous asparagine enhanced NaCl resistance during germination and seedling establishment. Inhibition of seedling establishment by NaCl concentration below 200 mM was reduced by the addition of asparagine to the medium. Maximal reduction of NaCl inhibition occurred between 2 and 4 mM for asparagine. Higher concentrations of NaCl prevented establishment whether exogenous asparagine was present or not. The total seedling content of Na⁺ increased about 9-fold at 200 mM NaCl. Asparagine had no effect on the K⁺ content per unit dry weight of seedlings grown on media containing increased levels of NaCl. The ratio of Na⁺/Ca⁺⁺, Na⁺/K⁺ increased at a high rate on media containing increased levels of NaCl. The present results indicate that the asparagine enhance the salt tolerance at seedling stage in rice. Relationship between free amino acid accumulation and saline tolerance is discussed.

목차

ABSTRACT

서언

재료 및 방법

결과 및 고찰

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인용문헌

키워드

NaCl Salt tolerance Asparagine Rice