草原与草坪
草原與草坪
초원여초평
GRASSLAND AND TURF
2014年
2期
39-44,50
,共7页
狼尾草%萌发期%幼苗期%抗旱性
狼尾草%萌髮期%幼苗期%抗旱性
랑미초%맹발기%유묘기%항한성
Pennisetum%germination period%seedling stage%drought resistance
以5个不同生境的野生狼尾草种子为试验材料,萌发期采用10%,15%和20%浓度的 PEG 6000模拟干旱胁迫,幼苗生长期采用控水处理,通过对相对发芽率、相对发芽势、叶片相对电导率、叶片相对含水量等抗旱相关指标测量,综合评价野生狼尾草种子萌发期和幼苗期的抗旱性。结果表明：萌发期抗旱性较强的是 ST、YJ2,抗旱性较弱的是 FX、DY；ST 和 NS 苗期的抗旱性较强,YJ2和 FX 抗旱性弱；萌发期和苗期的抗旱性综合排名为 ST>NS>YJ2>DY>FX。
以5箇不同生境的野生狼尾草種子為試驗材料,萌髮期採用10%,15%和20%濃度的 PEG 6000模擬榦旱脅迫,幼苗生長期採用控水處理,通過對相對髮芽率、相對髮芽勢、葉片相對電導率、葉片相對含水量等抗旱相關指標測量,綜閤評價野生狼尾草種子萌髮期和幼苗期的抗旱性。結果錶明：萌髮期抗旱性較彊的是 ST、YJ2,抗旱性較弱的是 FX、DY；ST 和 NS 苗期的抗旱性較彊,YJ2和 FX 抗旱性弱；萌髮期和苗期的抗旱性綜閤排名為 ST>NS>YJ2>DY>FX。
이5개불동생경적야생랑미초충자위시험재료,맹발기채용10%,15%화20%농도적 PEG 6000모의간한협박,유묘생장기채용공수처리,통과대상대발아솔、상대발아세、협편상대전도솔、협편상대함수량등항한상관지표측량,종합평개야생랑미초충자맹발기화유묘기적항한성。결과표명：맹발기항한성교강적시 ST、YJ2,항한성교약적시 FX、DY；ST 화 NS 묘기적항한성교강,YJ2화 FX 항한성약；맹발기화묘기적항한성종합배명위 ST>NS>YJ2>DY>FX。
Five wild Pennisetum seeds in different habitats were used as materials in this study.Drought stress was induced by Polyethylene Glycol 6000 at the germination period,and water control treatment was used at the seedling growth period.The relative germination rate,relative germination potential,leaf relative electrical conductivity and leaf relative water content were measured.Drought resistance of these wild Pennisetum in ger-mination and the seedling was comprehensive analyzed.The results showed that drought resistance of ST,YJ2 were higher,drought resistance of FX and DY were lower in the different Pennisetum at the germination period;Drought resistance of ST and NS were higher,drought resistance of YJ2 and FX were lower in the different Pennisetum at the seedling growth period.Comprehensive ranking of drought resistance for Pennisetum at the germination and seedling stage was ST>NS>YJ2>DY>FX.
