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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국육종학회 한국육종학회지 한국육종학회지 제46권 제4호
발행연도
2014.1
수록면
381 - 388 (8page)

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초록· 키워드

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Water use efficiency (WUE) is considered as an important characteristics of drought tolerance in crop plant. Thisstudy was carried out for determination of WUE of 29 Korean soybean cultivars including PI416937, a representative droughttolerant cultivar in USA, under two different soil water contents, the sustaining 50% of maximum field capacity on control and25% on drought treatment for 14 days at the late of vegetative growth stage. The WUE of whole plant (g/L) was determinedusing the measurement of the amount of water use (mL/day/plant), dry weight (g/plant), and relative growth rate (RGR) at 14days after treatment (DAT). The mean amount of water use of 30 soybeans was 183 and 64 mL/plant/day at control andtreatment, respectively, which was decreased 63% of water use under 25% of maximum field capacity. The mean dry weightof 30 soybeans of treatment was decreased 37% compared with that of control. The amount of water use of 30 soybeans washighly correlated with dry weight at 14 DAT, while it was weak correlated with RGR of treatment and not correlated with WUE. The WUE was highly correlated with RGR at control and treatment. The mean WUE of 30 soybean was 2.1 and 2.9g/L atcontrol and treatment, respectively. It means that WUE is increased under drought condition and is the variable characteristicsdepend on soil water content. The WUE of PI416937 was 3.5g/L at treatment. This study suggested WUEs of 29 Koreansoybean cultivars and that the higher WUE Korean cultivars than PI416937 were 3 cultivars, Daepoong (3.8g/L), Danbeak(4.0g/L), and Keumkang (3.8g/L).

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