UV spectrometry measurement on the indole alkaloids (IA) contents of seven wheat varieties (KOK1679,My295,Li,Han4564 and Yanda1817,resistant to S. avenae;Shaanximazha and Lovrin10,susceptible to S. avenae) showed that...UV spectrometry measurement on the indole alkaloids (IA) contents of seven wheat varieties (KOK1679,My295,Li,Han4564 and Yanda1817,resistant to S. avenae;Shaanximazha and Lovrin10,susceptible to S. avenae) showed that during tillering and stem elongation stages,KOK1679,My295 and Li had a higher IA content (>0.5 mg·g -1 FW);and during heading and anthesis stages,the penultimate leaves of all five resistant varieties contained higher IA (>0.5 mg·g -1 FW).The IA content was lower in the flag leaves of both resistant and susceptible varieties,but was significantly higher in the ears of resistant varieties (up to 0.645 mg·g -1 FW in KOK1679) than in those of susceptible ones.It was showed that the IA content in wheat’s ear played an important role in the resistance to S.avenae.展开更多
[Objective] The aim was to screen economic and environment-friendly pesticides adaptive to aphid-resistant varieties in main rape growing regions of Yunnan Province.[Method] The effects of 6 pesticides against aphids ...[Objective] The aim was to screen economic and environment-friendly pesticides adaptive to aphid-resistant varieties in main rape growing regions of Yunnan Province.[Method] The effects of 6 pesticides against aphids on 22 Brassica campestris materials of the main breeds in Yunnan Province,the new improved varieties in China and the core breeding materials were tested.[Result] Yunyoushuang 1,Huayou 4,Yunhuayou Early-maturing Variety No.1 and A35 showed better aphid-resistance.An optimum pesticide application strategy was to use Diyaling in sowing time,and interchangeably apply nitenpyram and imidacloprid during flowering and pod formation stages.[Conclusion] The present study had provided an important technical support for sustainable development of rape industry.展开更多
文摘UV spectrometry measurement on the indole alkaloids (IA) contents of seven wheat varieties (KOK1679,My295,Li,Han4564 and Yanda1817,resistant to S. avenae;Shaanximazha and Lovrin10,susceptible to S. avenae) showed that during tillering and stem elongation stages,KOK1679,My295 and Li had a higher IA content (>0.5 mg·g -1 FW);and during heading and anthesis stages,the penultimate leaves of all five resistant varieties contained higher IA (>0.5 mg·g -1 FW).The IA content was lower in the flag leaves of both resistant and susceptible varieties,but was significantly higher in the ears of resistant varieties (up to 0.645 mg·g -1 FW in KOK1679) than in those of susceptible ones.It was showed that the IA content in wheat’s ear played an important role in the resistance to S.avenae.
基金Supported by National Science and Technology Supporting Project (2009BADA8B01,2010BAD01B04)Kunming Comprehensive Experimental Station,National Modern Agricultural Rape Industrial Technology System(NYCYTX-00564)Development of the Yunnan Modern Agricultural Rape Industrial Technology System~~
文摘[Objective] The aim was to screen economic and environment-friendly pesticides adaptive to aphid-resistant varieties in main rape growing regions of Yunnan Province.[Method] The effects of 6 pesticides against aphids on 22 Brassica campestris materials of the main breeds in Yunnan Province,the new improved varieties in China and the core breeding materials were tested.[Result] Yunyoushuang 1,Huayou 4,Yunhuayou Early-maturing Variety No.1 and A35 showed better aphid-resistance.An optimum pesticide application strategy was to use Diyaling in sowing time,and interchangeably apply nitenpyram and imidacloprid during flowering and pod formation stages.[Conclusion] The present study had provided an important technical support for sustainable development of rape industry.
