CAJ | 학술논문

以不同地理来源续随子品系为试验材料,分别在干旱胁迫及对照条件下测定其形态及生理指标,并用基于主成分分析的隶属函数综合评价法对各品系抗旱性进行综合评价.结果表明,5个供试续随子品系抗旱性的综合评价值依次为安徽(0.839)>河南(0.524)>吉林(0.321)>福建(0.275)>重庆(0.179).安徽续随子品系在综合评价中表现出较强的抗旱优势,可作为续随子抗旱性研究的代表材料.以抗旱性综合评价值为因变量,以单项指标相对值为自变量,建立了评价续随子抗旱性的最优回归方程;筛选出MDA含量、SOD酶活性和根冠比等3个对续随子抗旱性有显著影响的指标.在苗期抗旱性鉴定中,有选择地检测这些指标有助于提高续随子抗旱性的鉴定效率.
이불동지리래원속수자품계위시험재료,분별재간한협박급대조조건하측정기형태급생리지표,병용기우주성분분석적대속함수종합평개법대각품계항한성진행종합평개.결과표명,5개공시속수자품계항한성적종합평개치의차위안휘(0.839)>하남(0.524)>길림(0.321)>복건(0.275)>중경(0.179).안휘속수자품계재종합평개중표현출교강적항한우세,가작위속수자항한성연구적대표재료.이항한성종합평개치위인변량,이단항지표상대치위자변량,건립료평개속수자항한성적최우회귀방정;사선출MDA함량、SOD매활성화근관비등3개대속수자항한성유현저영향적지표.재묘기항한성감정중,유선택지검측저사지표유조우제고속수자항한성적감정효솔.
The morphological and physiological characteristics of caper spurge (Euphorbia lathyris L.) varieties from different geographic origins were investigated under both normal and simulated drought stress conditions during seedling stage .Their drought resistance abilities were further evaluated generally using principal components and subordinate function analysis based on the index relative value. The results showed that drought resistance abilities were in following order: Anhui(0.839)>Henan(0.524)>Jilin(0.321)>Fujian(0.275)>Chongqing (0.179). Optimal regression equation was established using single index relative value as the independent variables while the comprehensive index (D value) as the dependent variable. The regression results showed that the relative values of MDA content, SOD activity and root top ratio were ideal to measure the drought resistance of caper spurge during seedling stage and to enhance the efficiency of drought resistance evaluation.