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《Pratacultural Science》 2006-07
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Evaluation on the resistance of alfalfa to thrips

LI Yan-zhong~1,NAN Zhi-biao~1,WANG Yan-rong~1,YU Ling~1,SUNG Jian-hua~1,Geoff Auricht~2,Trevor Garnett~2(1.College of Pastoral Agricultural Science and Technology of Lanzhou University,Lanzhou 730020,China;2.South Australia Research and Development institute,Adelaide.SA.5001.Australia)  
At the early flower stage of the 2nd cut in 2 and 3 years' age,the damage of thrips on 97 alfalfa varieties(strains) from inside/outside China was investigated.The result was: the general rate of thrips on all alfalfa varieties was 100%,branches which had withered leaves took the highest proportion 67.1%,the lest was 0,average 24.3%;using cluster analysis,the resistance of the experimental varieties to thrips were clustered into 5 classes,there were 14 varieties with the highest resistance(Zhonglan No.1,QS-2,Dayushan,Ranble and Gongnong No.2 etc.),29 varieties with high resistance(Qingyang,SA32140,YL-21,SM9808,and Longzhong etc.),32 varieties with medium resistance(Sceptre,SA32152,Algonguin,Golden empress and SM9809 etc.),19 varieties with low resistance(SA16465,SA16464,SA10125,SA7090 and Alfalfa Queen etc.) and 3 varieties with the lowest resistance(Xinjiang Daye from Grassland Research Institute of China Agricultural Science Academy,W1320 and SA35095 etc.),variety numbers of 5 classes took a part of the total variety numbers 14.4%,29.9%,33.0%,19.6% and 3.1% separately.
【Fund】: ACIAR项目(AS19826)
【CateGory Index】: S541.9
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