| 水稻品种对褐稻虱的抗性 |
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| 引用本文： | 曾玲,吴荣宗.水稻品种对褐稻虱的抗性[J].昆虫学报,1984,0(4):375-383. |
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| 作者姓名： | 曾玲 吴荣宗 |
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| 作者单位： | 华南农学院 |
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| 摘 要： | 本文运用苗期抗性筛选法,测定了9个水稻品种对褐稻虱的抗性及其与秧龄的关系,表明秧龄对高抗品种的抗性表现影响不显著,而部分中抗品种的抗性则随秧龄增长而加大。抗性机制研究证明:高抗品种7105具有很强的不嗜性和抗生性;而包选2号和辐包矮21等中抗品种则以耐虫性为主,兼有不同程度的抗生性。
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| 关 键 词： | 褐稻虱 水稻抗虫性 |
THE RESISTANCE OF RICE VARIETIES TO THE BROWN PLANTHOPPER, NILAPARVATA LVGENS (STAL) |
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| ZENG LING WUNG JUNG-TSUNG.THE RESISTANCE OF RICE VARIETIES TO THE BROWN PLANTHOPPER, NILAPARVATA LVGENS (STAL)[J].Acta Entomologica Sinica,1984,0(4):375-383. |
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| Authors: | ZENG LING WUNG JUNG-TSUNG |
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| Affiliation: | South-China Agricultural College |
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| Abstract: | The resistance of 9 rice varieties to the brown planthopper (BPH), Nilaparvata lu-gens (Stal), was tested by using the seedling bulk screening method. Among the 9 varieties tested, Mudgo and 7105 was highly resistant (HR); while Triveni, Fubaoai 21, Fubaoai 1, Baosyan 2, Zhungshanhong and Gubao 117 were moderately resistant (MR). It was found that an age-related increase in resistance of the plant to the BPH was evident in the moderately resistant varieties, but this was not found in the high resistant ones.The nature of the resistance of MR varieties, including Fubaoai 21, Baosyan 2, Zhungshanhong and Triveni, and HR variety 7105 was studied. The results were as follows:1)The BPH did not prefer the HR varieties on which the insects had low food uptake, slow development, high mortality, and low fecundity and egg hatchability, due to the presence of antibiotic factors. Therefore the population growth on HR varieties was suppressed.2)The MR varieties of Fubaoai 21 and Triveni were preferred by BPH for feeding at 10-day old plants, but they were not preferred at 45-day old plants, on which the caged insects had retarded development and low levels of survival and fecundity. Thus on the above mentioned two varieties the insect populations were smaller as compared with that on the susceptible TN 1. Except at 60-day old plants, no significantly adverse effects of the varieties such as Baosyan 2 and Zhungshanhong at 45-day old plants on this insect were observed.Thus, the moderate resistance in the varieties Fubaoai 21 and Triveni is caused by the strong antibiosis and some level of tolerance, but the resistance in Baosyan 2 and Zhungshanhong is due to week antibiosis and high tolerance. In general, the tolerance increased with the increase of the age of the rice plant. |
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| Keywords: | Nilaparvata lugens-insect resistance of rite |
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