湖南林业科技
湖南林業科技
호남임업과기
Hunan Forestry Science & Technology
2015年
6期
45-50,56
,共7页
铅胁迫%灌木柳%生长
鉛脅迫%灌木柳%生長
연협박%관목류%생장
lead stress%bush willow%growth
采用水培法研究了4个灌木柳无性系在不同浓度(100μM、300μM、600μM)铅胁迫下的生长表现及其耐受性。结果表明:柳树无性系的存活率与生长量在不同无性系和不同铅胁迫浓度间均存在显著差异;不同浓度的铅胁迫均抑制了灌木柳无性系的生长,其存活率与生长量的排序均为 CK >100μM >300μM >600μM;在100~600μM铅胁迫下,存活率和萌枝数排序均为银柳 P102>欧洲红皮柳 P665>蒿柳 P683>细柱柳 P642,株高和生物量排序均为银柳 P102>蒿柳 P683>欧洲红皮柳 P665>细柱柳 P642,生物量分配排序为银柳 P102>欧洲红皮柳 P665>细柱柳 P642>蒿柳 P683。银柳 P102在3种铅胁迫浓度下耐性指数均为最高。
採用水培法研究瞭4箇灌木柳無性繫在不同濃度(100μM、300μM、600μM)鉛脅迫下的生長錶現及其耐受性。結果錶明:柳樹無性繫的存活率與生長量在不同無性繫和不同鉛脅迫濃度間均存在顯著差異;不同濃度的鉛脅迫均抑製瞭灌木柳無性繫的生長,其存活率與生長量的排序均為 CK >100μM >300μM >600μM;在100~600μM鉛脅迫下,存活率和萌枝數排序均為銀柳 P102>歐洲紅皮柳 P665>蒿柳 P683>細柱柳 P642,株高和生物量排序均為銀柳 P102>蒿柳 P683>歐洲紅皮柳 P665>細柱柳 P642,生物量分配排序為銀柳 P102>歐洲紅皮柳 P665>細柱柳 P642>蒿柳 P683。銀柳 P102在3種鉛脅迫濃度下耐性指數均為最高。
채용수배법연구료4개관목류무성계재불동농도(100μM、300μM、600μM)연협박하적생장표현급기내수성。결과표명:류수무성계적존활솔여생장량재불동무성계화불동연협박농도간균존재현저차이;불동농도적연협박균억제료관목류무성계적생장,기존활솔여생장량적배서균위 CK >100μM >300μM >600μM;재100~600μM연협박하,존활솔화맹지수배서균위은류 P102>구주홍피류 P665>호류 P683>세주류 P642,주고화생물량배서균위은류 P102>호류 P683>구주홍피류 P665>세주류 P642,생물량분배배서위은류 P102>구주홍피류 P665>세주류 P642>호류 P683。은류 P102재3충연협박농도하내성지수균위최고。
we examined the growth traits and tolerance index of four bush willow clones on different concentrations (100μM,300 μM,600 μM)of lead stress using hydroponic culture.The results showed that there were significant differ-ence on the survival rate and growth characteristics among different clones or lead content.The growth of the clones were inhibited by the lead stress of different concentrations,the survival rate and growth traits were in order of CK >100 μM>300 μM>600 μM.Under 100 μM~600 μMlead concentrations,the survival rate and the sprout numbers were in order of P102 >P665 >P683 >P642,the stem height and the biomass were in order of P102 >P683 >P665 >P642,the distribution of the biomass was in order of P102 >P665 >P642 >P683.The P102 has the highest tolerance index under the different lead concentrations.