Physical and chemical defences of pods and seeds of white mustard (Sinapis alba L) against tarnished plant bugs, Lygus lineolaris (Palisot de Beauvois) (Heteroptera: Miridae)
Physical and chemical defences of pods and seeds of white mustard (Sinapis alba L) against tarnished plant bugs, Lygus lineolaris (Palisot de Beauvois) (Heteroptera: Miridae)
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DOI：
10.4141/cjps96-006
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发表时间：
1996-01-01
影响因子：
1.2
通讯作者：
Bodnaryk, R
中科院分区：
文献类型：
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作者：
Bodnaryk, R
在实验室的无选择喂养试验中，成年暗蝽 (Lygus lineolaris) 取食白芥菜 (Sinapis alba L.) 豆荚内种子的频率比取食油菜 (Barssica napus L.) 豆荚内种子的频率低 5-10 倍。 3. alba 豆荚上长而尖锐的刺（毛状体）的存在并不能解释在取食这种芥菜和光滑油菜豆荚上的所有差异，因为对剃毛的 S. alba 豆荚的取食率仅比未剃毛的对照高两倍。黑盲蝽 (Lygus lineolaris) 取食商业品种豆荚内种子的频率比取食近等基因低芥子油苷品系种子的频率低四倍，这表明种子中高浓度的芥子油苷“sinalbin”在很大程度上决定了黑盲蝽 (L. lineolaris) 对该物种的取食率较低。 alba 面向油籽市场。 L. lineolaris 对油籽 S. alba 的种子损害可能比目前对芥菜 S. alba 造成的损害要高得多。
Adult tarnished plant bugs (Lygus lineolaris) fed 5-10 times less frequently on seeds within pods of white mustard (Sinapis alba L.) than on seeds within pods of canola (Barssica napus L.) in no-choice feeding tests in the laboratory. The presence of long, sharp spines (trichomes) on pods of 3. alba did not account for all of the difference in feeding on this mustard and on the smooth pods of canola because the feeding rate on shaved pods of S. alba was only twofold higher than on unshaved controls. Lygus lineolaris fed four times less frequently on seeds within pods of a commercial cultivar than on seeds of a near-isogenic low-glucosinolate line of S. alba, suggesting that it is the high concentration of the glucosinolate ''sinalbin'' in seeds that largely determines the low rate of feeding of L. lineolaris on this species.Plant breeders are currently developing low-glucosinolate lines of mustards such as S. alba for the oilseed market. Seed damage by L. lineolaris in an oilseed S. alba likely will be considerably higher than currently occurs in the mustard S. alba.