水稻品系CRR-99-95W稻瘟病发生的抗性因素

IF 1.6 3区 农林科学 Q2 AGRONOMY
K. Sugiura, T. Oi, Toshiharu Tanaka, Aoi Hamagashira, Rachana Ouk, Mitsuru Nakamura, Yasuto Ide, Kengo Tsuda, A. Ito, A. Yamauchi
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引用次数: 3

摘要

摘要近年来,由米蝽引起的稻米霉变严重降低了稻米的品质,不仅在日本,而且在许多其他稻米生产国也成为一个大问题。在本研究中,研究了抗外源性和耐受性作为水稻品系CRR-99-95W对稻瘟病的抗性因素。通过两个实验来确定抗外源性参与作为CRR-99-95 W抗性因素的可能性。此外,Nezara viridula在CRR-99-95W成熟壳上的吮吸频率与对照基因型之间没有显著差异。这些结果表明,CRR-99-95W对水稻蝽无明显的灭异作用。然后,为了检验阻力机制中涉及的公差因素,对外壳结构进行了分析。结果表明,与对照基因型相比,CRR-99-95-W的内胚层中厚壁组织纤维的细胞壁堆积率往往更高。此外,CRR-99-95W的苍白钩开口宽度比对照基因型的要窄。CRR-99-95W的这种形态特征可能对其抵抗蝽攻击起着重要作用。图形摘要
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Resistance factors of pecky rice incidence caused by the rice stink bugs (Leptocorisa chinensis, Nezara viridula) in rice line CRR-99-95W
ABSTRACT Pecky rice incidence caused by rice stink bugs greatly decreases the quality of rice grain and has come a big problem not only in Japan but also many other rice producing countries recently. In this study, antixenosis and tolerance were examined as the factors of resistance to rice stink bugs attack of rice line CRR-99-95 W. Two experiments were conducted to determine a possibility of antixenosis involvement as a factor of the resistance in CRR-99-95 W. The results showed no correlation between the number of Leptocorisa chinensis parasites and pecky rice incidence. Furthermore, no significant difference was found between the sucking frequency of Nezara viridula on mature husks of CRR-99-95 W and that on the check genotypes. These results suggest that CRR-99-95 W does not exhibit antixenosis effect against rice stink bugs. Then, to examine the tolerance factor involved in the resistance mechanism, the husks structures were analyzed. The results showed that the packing ratio of cell wall of the sclerenchyma fibers in the palea tended to be higher in CRR-99-95-W compared to the check genotype. In addition, the width of the hook openness of the palea of CRR-99-95 W was narrower than that of the check genotype. Such morphological characteristic of CRR-99-95 W may play an important role in its resistance against stink bug attack. Graphical abstract
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来源期刊
Plant Production Science
Plant Production Science 农林科学-农艺学
CiteScore
5.10
自引率
4.00%
发文量
27
审稿时长
>36 weeks
期刊介绍: Plant Production Science publishes original research reports on field crops and resource plants, their production and related subjects, covering a wide range of sciences; physiology, biotechnology, morphology, ecology, cropping system, production technology and post harvest management. Studies on plant production with special attention to resource management and the environment are also welcome. Field surveys on cropping or farming system are also accepted. Articles with a background in other research areas such as soil science, meteorology, biometry, product process and plant protection will be accepted as long as they are significantly related to plant production.
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