抗虫品种桂育11号对褐飞虱取食、生长发育及种群增长的影响
Feeding and population growth of the brown planthopper, Nilaparvata lugens (St?l) on the resistant rice variety Guiyu No.11
吴碧球;黄所生;李 成;凌 炎;黄 芊;龙丽萍;黄凤宽
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DOI:10.7679/j.issn.2095-1353.2022.109
作者单位:广西壮族自治区农业科学院植物保护研究所,南宁 530007;广西农作物病虫害生物学重点实验室,南宁 530007; 农业农村部华南果蔬绿色防控重点实验室,南宁 530007
中文关键词:桂育11号;褐飞虱;抗虫性;发育适合度;种群增长
英文关键词:Guiyu No.11; Nilaparvata lugens; insect resistance; developmental fitness; population growth
中文摘要:
【目的】 种植抗虫品种水稻是控制褐飞虱Nilaparvata lugens (Stål) 发生的有效措施。桂育11号是在广西推广种植的高产、优质的常规稻品种,兼具中抗褐飞虱和氮高效利用特性。本文通过研究褐飞虱在桂育11号上的蜜露分泌量、若虫存活率、种群趋势指数及相对发育适合度等指标,以明确桂育11号对褐飞虱的抗虫性及该品种对褐飞虱种群的控制作用。【方法】 采用生命表方法,选择柳沙油占202作为感虫对照品种,Rathu Heenati作为抗虫对照品种,研究不同抗性水稻对褐飞虱实验种群的取食、生长发育、存活和繁殖的影响。【结果】褐飞虱在桂育11号的取食量(7.82 mg/ 24 h)、若虫存活率(低龄74.00%,高龄90.64%)、雌成虫比率(46.22%)、成虫短翅率(80.77%)、雌成虫寿命(14.9 d)、雌成虫体重(1.71 mg/头)和产卵量(524.1粒/雌)均与在感虫对照品种柳沙油占202的差异不显著(P>0.05),羽化率(61.00%)和卵孵化率(76.86%)显著低于在柳沙油占202的(P<0.05);但取食量、若虫存活率、羽化率、成虫寿命、体重、产卵量和卵孵化率显著高于在抗虫对照品种Rathu Heenati的(P<0.05),仅若虫历期(15.52 d)显著低于在对照品种Rathu Heenati的(P<0.05)。生命表参数综合评价发现,褐飞虱在感虫对照品种柳沙油占202、桂育11号和抗虫对照品种Rathu Heenati的种群趋势指数分别为84.97、61.52和0.00,褐飞虱在桂育11号和对照品种Rathu Heenati的相对发育适合度分别为0.72和0.00。【结论】 在广西当前常规施氮条件下,桂育11号对褐飞虱的抗性为耐害性,相对于感虫对照品种柳沙油占202,褐飞虱在桂育11号的发育适合度下降,可能影响其田间种群增长数量。
英文摘要:
[Objectives] To determine the
resistance of the Guiyu No.11 rice variety,
a high-yield, high-quality variety with efficient
nitrogen utilization that is widely planted in Guangxi, to the brown planthopper (Nilaparvata lugens, BPH) and the effect of feeding on this variety on BPH population
growth. [Methods] The amount
of honey-dew secreted, nymph survival rate, population trend index, relative
developmental fitness, and other BPH population indices were measured on three
different rice varieties with varying degrees of resistance to the BPH; Guiyu
No.11 (moderate resistance), Rathu heenati (resistant) and Liuhsayouzhan 202 (susceptible).
Life tables were then used to compare the effects of feeding on each rice
variety on BPH feeding, growth, development, survival and reproduction. [Results]
There was no significant difference in
the amount of honeydew secreted (7.82 mg/ 24 h), nymph survival rate (74.00%
young nymphs, 90.64% older nymphs), female: male sex ratio (46.22%), proportion
of brachypterous individuals (80.77%), adult female longevity (14.9 d), adult female
body weight (1.71 mg) or egg capsules per female (524.10 capsules), between BPH
that fed on Guiyu No.11 and those that fed on Liushayouzhan 202 (P>0.05),
but the eclosion rate (61.00%) and egg hatchability rate (76.86%) of those that
that fed on Guiyu No.11 were significantly lower than that of those that fed on
Liushayouzhan 202 (P<0.05). The amount of honeydew
secreted, nymph survival rate, eclosion
rate, adult longevity,
female body weight, oviposition
and hatchability
of BPH that fed on Guiyu No.11 were
all significantly higher than those that fed on Rathu heenati (P<0.05).
Only the duration of the nymph period (15.52 d) was significantly lower on Guiyu No.11 than on Rathu heenati (P<0.05).
The population trend indices for Liushayouzhan
202, Guiyu No.11 and Rathu heenati were 84.97, 61.52 and 0.00, respectively,
and relative developmental fitness on Guiyu No.11 and Rathu heenati were 0.72
and 0.00, respectively. [Conclusion]
Guiyu No.11 is moderately resistant to the BPH under current
conventional nitrogen application conditions in Guangxi. Compared to the
susceptible variety Liushayouzhan 202, the development of the BPH is
significantly lower on Guiyu No.11, which may slow the population growth of
this pest in the field.