草原与草坪
草原與草坪
초원여초평
GRASSLAND AND TURF
2014年
5期
55-59
,共5页
张小娇%祁娟%曹文侠%徐长林
張小嬌%祁娟%曹文俠%徐長林
장소교%기연%조문협%서장림
垂穗披碱草%苗期%干旱胁迫%抗旱性%隶属函数
垂穗披堿草%苗期%榦旱脅迫%抗旱性%隸屬函數
수수피감초%묘기%간한협박%항한성%대속함수
Elymus nutans%seedling stage%drought stress%drought resistance%subordinate function
采用干旱胁迫处理不同海拔高度来源的3份野生垂穗披碱草幼苗，对其叶片相对含水量(RWC)、叶绿素、脯氨酸(Pro)、丙二醛(MDA)和可溶性糖含量进行测定。结果表明：随着干旱胁迫天数的增加，叶片相对含水量和叶绿素含量显著降低(P <0.05)，脯氨酸、丙二醛和可溶性糖含量都显著增加(P <0.05)。相关性分析表明，各指标之间都存在极显著相关。运用隶属函数法综合评价3种垂穗披碱草，其抗旱性顺序为：Ⅲ号垂穗披碱草>Ⅱ号垂穗披碱草>Ⅰ号垂穗披碱草。
採用榦旱脅迫處理不同海拔高度來源的3份野生垂穗披堿草幼苗，對其葉片相對含水量(RWC)、葉綠素、脯氨痠(Pro)、丙二醛(MDA)和可溶性糖含量進行測定。結果錶明：隨著榦旱脅迫天數的增加，葉片相對含水量和葉綠素含量顯著降低(P <0.05)，脯氨痠、丙二醛和可溶性糖含量都顯著增加(P <0.05)。相關性分析錶明，各指標之間都存在極顯著相關。運用隸屬函數法綜閤評價3種垂穗披堿草，其抗旱性順序為：Ⅲ號垂穗披堿草>Ⅱ號垂穗披堿草>Ⅰ號垂穗披堿草。
채용간한협박처리불동해발고도래원적3빈야생수수피감초유묘，대기협편상대함수량(RWC)、협록소、포안산(Pro)、병이철(MDA)화가용성당함량진행측정。결과표명：수착간한협박천수적증가，협편상대함수량화협록소함량현저강저(P <0.05)，포안산、병이철화가용성당함량도현저증가(P <0.05)。상관성분석표명，각지표지간도존재겁현저상관。운용대속함수법종합평개3충수수피감초，기항한성순서위：Ⅲ호수수피감초>Ⅱ호수수피감초>Ⅰ호수수피감초。
The seedlings of 3 germplasms of wild Elymus nutans from different altitudes were treated with drought stress,and the contents of water,proline,MDA,chlorophyll and soluble sugar in leaf were measured. The results showed that with the increase of drought stress,the contents of relative water and chlorophyll in leaf were significantly decreased (P <0.05 ),and the contents of proline,MDA,chiorophyll and soluble sugar were significantly increased (P <0.05).Correlation analysis showed that there were highly significant correla-tions among above indicators.The drought resistance of 3 germplasms were comprehensively evaluated with subordinate function,and the drought resistance order was group Ⅰ< group Ⅱ< group Ⅲ.
