Nilapavata lugens,rice varieties,plant resistance,roots,functi0onal plant loss index (FPLI),nutrient element uptake,"/> 褐飞虱侵害对不同抗性水平水稻根部吸收氮、磷、钾的影响

›› 2010, Vol. 53 ›› Issue (4): 411-419.doi:

• 研究论文 • 上一篇    下一篇

褐飞虱侵害对不同抗性水平水稻根部吸收氮、磷、钾的影响

刘井兰,吴进才   

  • 出版日期:2010-06-08 发布日期:2010-04-20
  • 通讯作者: 吴进才

Effects of Nilaparvata lugens (Stål) (Homoptera:Delphacidae) infestation on the uptake level of nitrogen, phosphorus and potassium by roots of rice varieties with different resistant levels

LIU Jing-Lan, WU Jin-Cai   

  • Online:2010-06-08 Published:2010-04-20

摘要: 为了解褐飞虱Nilaparvata lugens侵害后水稻抗性水平与根系吸收氮(N)、磷(P)、钾(K)的关系,对不同抗性水平的水稻受褐飞虱侵害后的平均受害水平、植株功能损失指数及水稻吸收水培液营养元素N,P,K情况进行了研究。结果表明:不同水稻品种(TN1、协优63、协优963和超级培矮64S/E32)接种褐飞虱后,TN1受害最严重,协优63和超级培矮64S/E32 次之;受害最轻的是协优963,30头/株侵害后植株功能损失指数仅为0.661。40,60和80头/株侵害水稻后根系对K吸收下降程度最显著,其次为P,最后为N;且随褐飞虱侵害时间的延长(6 d, 9 d)影响愈显著。60头/株侵害TN1、协优63、协优963和超级培矮64S/E32后9 d,根系对K吸收下降率分别为164.11%,74.61%,55.16%和46.60%。由此可见,随水稻品种抗性水平的下降,接种褐飞虱后,水稻根部对水培液营养元素吸收下降程度愈显著。本研究结果可对深入阐明不同抗性水平水稻抗(耐)虫机制与根系吸收能力关系提供参考。

关键词: 褐飞虱, 水稻品种, 植物抗性, 根系, 植株功能损失指数, 营养元素吸收

Abstract: To understand the relationship between rice plant resistance and the uptake of nitrogen, phosphorus and potassium by roots under Nilaparvata lugens infestation, we examined the rice plant resistance (average injury scale), functional plant loss index (FPLI) and uptake of nitrogen, phosphorus and potassium by roots of rice varieties under N. lugens infestation. The results showed that the FPLI of TN1 was the greatest, followed by Xieyou 63 and super-high yield rice Peiai 64S/E32, and that of Xieyou 963 was the lowest (0.661) under the infestation of 30 nymphs per plantThe percent reduction of K uptake in hydroponic solution under the infestation of 40, 60 and 80 nymphs per plant was the highest, followed by P and the last was N. The uptake of N, P and K by roots significantly declined with the increase of N. lugens feeding duration (6 and 9 d). Percent reduction of K uptake by roots after infestation by 60 nymphs was 164.11% on TN1, 74.61% on Xieyou 63, 55.16% on Xieyou 963 and 46.60% on super-high yield rice Peiai 64S/E32, respectively. It is so concluded that the level of uptake by roots decreased dramatically with the rice plant resistance decreasing. The present findings may have significance for understanding the relationship between rice resistant level and uptake levels of rice roots.

Key words: Nilapavata lugens')">