大蒜种质资源对蒜蛆的抗性评价-ingentaconnect.pdfVIP

20 10, 11( 5) : 57 8-582 Journa l o f P lant G enetic R esources 大蒜种质资源对蒜蛆的抗性评价 王海平, 李锡香, 沈镝, 邱杨, 宋江萍 ( , 100081) : 就大蒜种质资源对蒜蛆的抗性进行了虫圃田 鉴定, 并对抗性与大蒜主要植物学性状和大蒜辣素含量的相关性进 行了分析结果表明: 52份材料的感虫指数分布在 714 ~ 903 8 之 , 种质资源 抗虫性差异达到了显著水平 聚类分析并 结合感虫指数将 52份种质资源分为高抗抗中抗中感感高感 6 个类别, 其中高抗和抗性材料分别为 4份和 8份相关分 析表明: 感虫指数与植株的 7 个形态数量性状的相关性均未达到显著水平, 而与鳞茎的鳞芽背宽鳞茎的大蒜辣素含量均呈极 显著的负相关, 即抗性与二者显著正相关表明大蒜辣素含量越高, 大蒜对蒜蛆的抗性越强 从鳞芽背宽较宽和高大蒜辣素 含量的大蒜资源中筛选抗蒜蛆的种质可能性更大 : 大蒜 蒜蛆 抗虫性 大蒜辣素 Identification ofResistance ofA llium sativum L. Germplasm Resources toD elia antique M. WANG H a-i p ing, L I X i- x iang, SH EN D ,i Q IU Y ang, SON G Jiang- p ing (Institu te of Vegetables and F low ers, Ch inese A cademy of Agricultural Sciences, Beij ing 1000 1) Abstract: R esistance ofA llium sativum L. germ plasm resources to onion fly(D elia antique M. ) w as ident ified in f ie ld p lo t. T he resu lt show ed that p est index d istributed bewt een 7. 14 - 90. 38. R esistance of 52 accession s w as significan tly different, w hich w ere classified into six g roup s, corresponding HR ( H igh resistant), R ( R esistant) , MR ( M idterm resistan t) , M S( M idterm susceptive) , S( Su scept ive) and H S( H igh su scept ive) . Am ong them, there w ere 4 and 8 accession s th at w ereH R and R to on ion fly, respectively. The resu lt also ind icated th at the resistance o fm a- terials to onion fly w as sign ificantly related to c love b ack w idth and content of allicin. A ccession s w ith broad clove back w idth and h igh conten t o f allicin have g reat po tentia l to be resistan t m ateria ls for breed ing. Key words:A llium sativum L. D elia antiqua M. Pest resistance A llicin (A llium sativum L. ) , 2 ,