玉米抗螨性的大棚人工诱发鉴定与评价分析  

Identification and evaluation of mite-resistances of maize inbred lines under artificially induced vinyl house conditions

作　　者：艾哈迈德[1] 金大勇[1] 康泽然 吴委林[1] 郑大浩[1] 

机构地区：[1]延边大学农学院,吉林延吉133002

出　　处：《延边大学农学学报》2015年第1期1-7,共7页Agricultural Science Journal of Yanbian University

基　　金：延边大学校科研启动基金(2011800-950118010);吉林省高等教育专项资金项目(012013002)

摘　　要：利用大棚条件,在人为控制和创造既能满足玉米正常生长发育,又能促使叶螨发生的条件下,进行了玉米抗螨性的鉴定,并以各自交系的受害指数（DMI）和受害面积比率（DMR）为基础采用聚类法和DMR-直观法划分玉米对叶螨的抗感性。结果表明：DMI、DMR和叶螨结网面积比率（SWR）分别为0.06~0.91、1.12%~93.98%和14.10%~99.50%间,其最高值分别是最低值的15.17、83.91和7.06倍;3者间呈极显著正相关（P〈0.01）。在2种聚类中,参试自交系均分为抗（占52.70%）和感（占47.30%）两大类群及高抗（占27.02%）、抗（占25.68%）、中感（占24.32%）、感（占16.22%）和高感（占6.76%）等5个亚类群;各类群间的DMI和DMR都存在极显著差异（P〈0.01）。基于DMI和DMR聚类分析划分的类群及亚类群中所包含的自交系种类及其数量都一致,自交系的抗感划分结果相同。与此相比,基于DMR值直观划分玉米对叶螨的抗感性,抗性自交系数量（占78.38%）偏多、抗性偏高。在参试自交系中,BSSSS53-B、9F592、K10-14-1和铁7922的DMI（〈0.10）、DMR（≤3.00%）和SWR（〈20.00%）都最小、抗螨性最强,而GNS12059和Mo17-476的DMI（〉0.75）、DMR（〉80.00%）和SWR（〉98.00%）都最大、抗螨性最弱;其中,Mo17-476对玉米叶螨最为敏感。Seventy-four maize inbred lines as materials in this study, the identification and evaluation of mite-resistances were conducted under artificially induced vinyl house conditions being propitious to both spider mites and maize plant growth. And, the resistance-susceptibility for each of inbred lines was classi- fied by cluster analysis based on damaged index （DMI）, damaged ratio （DMR） data. The results showed that values of DMI, DMR and spun web ratio （SWR） varied from 0.06 to 0.91, 1.12% to 93.98% and 14. 10% to 99.50%, respectively, and their maximum values were 15. 17, 83.91 and 7.06 times higher than minimum scores. DMI, DMR and SWR were significantly correlated each other （P〈0.01）. Cluster analysis based on both DMI and DMR resulted in the same classifications of resistance-susceptibilities with two groups of resistant inbred lines accounted for 52. 70% and susceptible inbred lines account for 47.30%, and 5 subgroups of highly resistant （27.02%）, resistant （25.68%）, mid-susceptible （24.32%）, susceptible （16.22%） and highly susceptible （6.76%） inbred lines. The DMI and DMR values between groups were significantly different （P〈0.01）. Compared with classifications by cluster analysis, direct classifications of mite-resistance and susceptibilities resulted in more numbers of resistant inbred lines （78.38%）with higher resistant values. Among the inbred lines measured, BSSSS53-B, 9F592, K10-14-1 andTie7922 revealed the lowest DMI （〈0. 10）, DMR （43%） and SWR （%20%） values, whereas GNS12059 and Mo17-476 had the highest DMI （〉0. 75）, DMR （〉80%）, SWR （〉98%） values and, Mo17-476 was an inbred line easily damaged by spider mites.

关 键 词：玉米 抗螨性 鉴定 聚类分析 

分 类 号：Q968[生物学—昆虫学]