Dai Qian-Xuan, Li Zi-Yuan, Tian Yao-Jia, Zhang Zhen-Fei, Wang Lei, Lu Yong-Yue, Li You-Zhi, Chen Ke-Wei
College of Agriculture, South China Agricultural University/Guangdong Province Key Laboratory of Bio-pesticide Innovation and Application, Guangzhou 510640, China.
College of Plant Protection, Hunan Agricultural University, Changsha 410011, China.
Ying Yong Sheng Tai Xue Bao. 2020 Oct;31(10):3273-3281. doi: 10.13287/j.1001-9332.202010.020.
To understand the damage capability of the invasive pest on diffe-rent corn varieties in China, we evaluated survival fitness of on three varieties of sweet corn (., Suitian No.1, Zhengtian 68, and Huajintian No.1) and three varieties of waxy corn (., Jingkenuo 2000, Guangheitiannuo, and Guangnuo No.1) by constructing life table for all populations. The correlation of biological parameters of to the main nutrients and crude fiber content in corn leaves were analyzed. Results showed that the larva survival rate, pupal weight, and production of on sweet corns were significantly higher than those on waxy corns. The intrinsic rate of increase () of on the sweet corns ranged from 0.1566 to 0.1843, and the net reproductive rate () ranged from 187.97 to 353.35, being higher than those reared on the waxy corns ( was from 0.0998 to 0.1465, and was from 25.89 to 95.34). reared on the sweet corns had higher population growth ability than those reared on the waxy corns. The content of main nutrients such as vitamin C, starch, soluble sugar, protein, fat, total amino acids, and crude fiber in the sweet corn leaves were higher than those in the waxy corn leaves. There were positive correlations between of to the contenst of vitamin C, starch, soluble sugar, protein, and crude fiber in corn leaves. The results indicated that reared on the sweet corn leaves had higher survival fitness than those reared on the waxy corn leaves.
为了解外来入侵害虫对我国不同玉米品种的危害能力，我们通过构建各虫口生命表，评估了该害虫在3个甜玉米品种（即穗甜1号、郑甜68和华津甜1号）和3个糯玉米品种（即京科糯2000、广禾甜糯、广糯1号）上的存活适合度。分析了该害虫生物学参数与玉米叶片主要营养成分及粗纤维含量的相关性。结果表明，该害虫在甜玉米上的幼虫存活率、蛹重和产卵量显著高于在糯玉米上的。该害虫在甜玉米上的内禀增长率（rm）为0.1566～0.1843，净增殖率（R0）为187.97～353.35，均高于在糯玉米上的（rm为0.0998～0.1465，R0为25.89～95.34）。该害虫在甜玉米上饲养时的种群增长能力高于在糯玉米上饲养时的。甜玉米叶片中维生素C、淀粉、可溶性糖、蛋白质、脂肪、总氨基酸和粗纤维等主要营养成分的含量高于糯玉米叶片中的。该害虫的rm与玉米叶片中维生素C、淀粉、可溶性糖、蛋白质和粗纤维的含量呈正相关。结果表明，该害虫在甜玉米叶片上饲养时的存活适合度高于在糯玉米叶片上饲养时的。
