Evaluation of African Maize Cultivars for Resistance to Fall Armyworm Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) Larvae.
Evaluation of African Maize Cultivars for Resistance to Fall Armyworm Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) Larvae.
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非洲玉米品种对夜蛾幼虫的抗性评价
DOI：
10.3390/plants10020392
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发表时间：
2021-02-18
期刊：
影响因子：
--
通讯作者：
Khan Z
中科院分区：
文献类型：
--
作者：
Chiriboga Morales X;Tamiru A;Sobhy IS;Bruce TJA;Midega CAO;Khan Z
秋粘虫（FAW）最近入侵并成为非洲玉米的重要害虫，造成玉米年产量损失高达三分之一。本研究评估了肯尼亚农民种植的6个玉米品种在实验室和田间条件下对FAW幼虫的抗性。在无选择和选择实验中，对FAW幼虫的捕获和取食、幼虫-蛹的发育、室内条件下的食物同化和田间试验中的植物危害进行了评估。在被评估的玉米品种中，我们没有发现对FAW取食的完全抗性，但我们发现，当FAW幼虫在某些品种中进行选择时，它们的接受度和偏好度存在差异。此外，“SC杜马43”叶片的蛹重最小，生长指数最低，表明该玉米杂交种对FAW幼虫有一定的抗菌作用。相比之下，‘ Rachar ’的生长指数最高，‘ Nyamula ’和‘ Rachar ’的蛹重最大。这些玉米品种叶片上毛状体的密度似乎与新生玉米的取食偏好没有直接关系。在自然和人工侵染下，不同品种间的田间植株损伤得分均无统计学差异。然而，与人工侵染的最初两次取样相比，在该季节的最后两次取样中，“Nyamula”和“Jowi”的植物损害得分往往较低。本研究揭示了FAW幼虫对一些非洲玉米品种的偏好和表现，表明不同品种在这些变量上存在差异；但没有发现对幼虫的高抗性。
The fall armyworm (FAW) has recently invaded and become an important pest of maize in Africa causing yield losses reaching up to a third of maize annual production. The present study evaluated different aspects of resistance of six maize cultivars, cropped by farmers in Kenya, to FAW larvae feeding under laboratory and field conditions. We assessed the arrestment and feeding of FAW neonate larvae in no-choice and choice experiments, development of larvae-pupae, food assimilation under laboratory conditions and plant damage in a field experiment. We did not find complete resistance to FAW feeding in the evaluated maize cultivars, but we detected differences in acceptance and preference when FAW larvae were given a choice between certain cultivars. Moreover, the smallest pupal weight and the lowest growth index were found on ’SC Duma 43′ leaves, which suggests an effect of antibiosis of this maize hybrid against FAW larvae. In contrast, the highest growth index was recorded on ‘Rachar’ and the greatest pupal weight was found on ‘Nyamula’ and ‘Rachar’. The density of trichomes on the leaves of these maize cultivars seems not to be directly related to the preference of neonates for feeding. Plant damage scores were not statistically different between cultivars in the field neither under natural nor artificial infestation. However, plant damage scores in ‘Nyamula’ and ‘Jowi’ tended to be lower in the two last samplings of the season compared to the two initial samplings under artificial infestation. Our study provides insight into FAW larval preferences and performance on some African maize cultivars, showing that there are differences between cultivars in these variables; but high levels of resistance to larvae feeding were not found.
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影响因子：
1.5
作者：
Kumela, Teshome;Simiyu, Josephine;Tefera, Tadele
通讯作者：
Tefera, Tadele
影响因子：
9.4
作者：
Chuang, Wen-Po;Herde, Marco;Luthe, Dawn S.
通讯作者：
Luthe, Dawn S.
影响因子：
3.7
作者：
Goergen G;Kumar PL;Sankung SB;Togola A;Tamò M
通讯作者：
Tamò M
影响因子：
3
作者：
de Fouchier A;Sun X;Caballero-Vidal G;Travaillard S;Jacquin-Joly E;Montagné N
通讯作者：
Montagné N
影响因子：
--
作者：
Day, R.;Abrahams, P.;Witt, A.
通讯作者：
Witt, A.