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Acta Agron Sin ›› 2006, Vol. 32 ›› Issue (04): 491-496.

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Evaluation of Soybean Germplasm in Resistance to Globular Stink Bug [Megacota cribraria (Fabricius)]

XING Guang-Nan; ZHAO Tuan-Jie; GAI Jun-Yi   

  1. Soybean Research Institute of Nanjing Agricultural University, National Center of Soybean Improvement, and National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing 210095, Jiangsu, China
  • Received:2005-03-24 Revised:1900-01-01 Online:2006-04-12 Published:2006-04-12
  • Contact: GAI Jun-Yi

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Abstract:

Globular stink bug [GSB, Megacota cribraria (Fabricius)] is reported as one of the often-happened insects, and sometimes, soybean plants are seriously damaged in the production in central and southern China. The objective of the present study was to establish an evaluation system of resistance to the insect and to identify resistant sources for breeding purposes. Based on the observation of occurrence and symptoms of the insect on soybeans, a set of resistance (damage) indices were designed and compared. Among them, the grade system according to the degree of black mildew on stem and purple spots on leaves was chosen to evaluate the resistance to GSB of 58 entries screened from 6724 domestic and foreign germplasm accessions. The results showed that there existed significant difference among accessions, observation dates, blocks, and accession×date. A group of highly resistant accessions, such as PI227687, Anluxiaohuangdou, Huaqihuangmaodou, Mianyangbaimaodou, were screened for breeding purposes. At the same time, a set of identification procedure and grading system were proposed for further study.

Key words: Soybean [Glycine max (L.) Merr.], Globular stink bug [Megacota cribraria (Fabricius)], Resistance to insects, Identification

CLC Number: 

  • S565
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