[Objective] Simple and reliable identification criteria used in screening phosphorus efficiency of soybean at seedling stage was discussed.[Method] Using the high and low phosphorus soil pot experiment,the soybean see...[Objective] Simple and reliable identification criteria used in screening phosphorus efficiency of soybean at seedling stage was discussed.[Method] Using the high and low phosphorus soil pot experiment,the soybean seedling stage＇s 5 criteria including RPH,RAW,RRW,RAPC and RRPC were studied.[Result] Low phosphorus stress had the low effects on relative plant height,the coefficient of variation was only 9.07%,has not achieved the remarkable level with its its criteria＇s relevance;Low phosphorus stress had the higher effects on relatively above-ground dry weight and relative dry weight of root,relatively above-ground phosphorus concentration and relative root phosphorus concentration,its coefficient of variation was also big,in turn is 26.67%,22.68%,24.01% and 15.87%,The correlation coefficient among the indicators had significantly or extremely significantly positive correlation.[Conclusion] Relatively above-ground dry weight and relative dry weight of root,relatively above-ground phosphorus concentration can be used as an important indicator of comprehensive evaluation of screening phosphorus efficiency of soybean at seedling stage,while the relative root phosphorus concentration can be used as secondary screening index.展开更多
Pot studies were carried out to evaluate the reactions of 23 selections of field pea （Pisum sativum） against Meloidogyne incognita （2000 freshly hatched juveniles （J2）/pot）. Experiment was conducted under greenh...Pot studies were carried out to evaluate the reactions of 23 selections of field pea （Pisum sativum） against Meloidogyne incognita （2000 freshly hatched juveniles （J2）/pot）. Experiment was conducted under greenhouse conditions （（24.7±3） ℃ and （62±7）% RH） and terminated 45 d after inoculation. The roots of all the selections were assessed to determine root-knot indices （RKI） on a 0-4 scale. Out of 23 selections HFP-990713, Pant P-25, and HFP-0129 were resistant; Pant P-2005, NDP-2 and Pant P-42 were tolerant; LFP-305, HFP-8909, HFP-4, HUP-31, HFP-0128, Pant P-31, Pant P-40, LFP-363, and HFP-0118 were moderately resistant; HFP-0110, HUDP-28, HUDP-15, HUDP-27, HUP-30, HUP-2 and HUDP-26 were moderately susceptible; and only Ambika was susceptible to M. incognita. It was observed that reproduction of nematode was favored on tolerant and susceptible cultivars but inhibited on resistant ones. Strong negative correlation was observed between the total fresh and dry plant weights and the root-knot index. The selection Pant P-42 showed highest tolerance among all the selections tested and can be recommended for field trials, whereas, selection Ambika showed highest susceptibility and should be avoided.展开更多
The research introduced selection and breeding process, characteristics and high-yield cultivation technology of Wuqing No.l. Wuqing No.l, also named Gaoyou black soybean, is bred based on Danbo black soybean introduc...The research introduced selection and breeding process, characteristics and high-yield cultivation technology of Wuqing No.l. Wuqing No.l, also named Gaoyou black soybean, is bred based on Danbo black soybean introduced from Japan in 1996 by Gaoyou Vegetable Cultivation Technology Station and Yangzhou Agricultural Technology Promotion Station. It was named in 2014 by Jinagsu Crop Cultivar Approvement Committee. The cultivar is high-yielding with high quality, big seeds, high resistance to stress, as well as high health-care value.展开更多
基金Supported by Foundation of Heilongjiang Provincial Department of Education"Biological Basis of the Roots from Different Soybean Genotypes Adapting to Low-phosphorus Soil"(10551033)Scientific Research Startup Foundation for Doctor Program of Mudanjiang Normal University(MSB200912)~~
文摘[Objective] Simple and reliable identification criteria used in screening phosphorus efficiency of soybean at seedling stage was discussed.[Method] Using the high and low phosphorus soil pot experiment,the soybean seedling stage＇s 5 criteria including RPH,RAW,RRW,RAPC and RRPC were studied.[Result] Low phosphorus stress had the low effects on relative plant height,the coefficient of variation was only 9.07%,has not achieved the remarkable level with its its criteria＇s relevance;Low phosphorus stress had the higher effects on relatively above-ground dry weight and relative dry weight of root,relatively above-ground phosphorus concentration and relative root phosphorus concentration,its coefficient of variation was also big,in turn is 26.67%,22.68%,24.01% and 15.87%,The correlation coefficient among the indicators had significantly or extremely significantly positive correlation.[Conclusion] Relatively above-ground dry weight and relative dry weight of root,relatively above-ground phosphorus concentration can be used as an important indicator of comprehensive evaluation of screening phosphorus efficiency of soybean at seedling stage,while the relative root phosphorus concentration can be used as secondary screening index.
文摘Pot studies were carried out to evaluate the reactions of 23 selections of field pea （Pisum sativum） against Meloidogyne incognita （2000 freshly hatched juveniles （J2）/pot）. Experiment was conducted under greenhouse conditions （（24.7±3） ℃ and （62±7）% RH） and terminated 45 d after inoculation. The roots of all the selections were assessed to determine root-knot indices （RKI） on a 0-4 scale. Out of 23 selections HFP-990713, Pant P-25, and HFP-0129 were resistant; Pant P-2005, NDP-2 and Pant P-42 were tolerant; LFP-305, HFP-8909, HFP-4, HUP-31, HFP-0128, Pant P-31, Pant P-40, LFP-363, and HFP-0118 were moderately resistant; HFP-0110, HUDP-28, HUDP-15, HUDP-27, HUP-30, HUP-2 and HUDP-26 were moderately susceptible; and only Ambika was susceptible to M. incognita. It was observed that reproduction of nematode was favored on tolerant and susceptible cultivars but inhibited on resistant ones. Strong negative correlation was observed between the total fresh and dry plant weights and the root-knot index. The selection Pant P-42 showed highest tolerance among all the selections tested and can be recommended for field trials, whereas, selection Ambika showed highest susceptibility and should be avoided.
基金Supported by Jiangsu Three Agricultural Projects(sx(2007)001)~~
文摘The research introduced selection and breeding process, characteristics and high-yield cultivation technology of Wuqing No.l. Wuqing No.l, also named Gaoyou black soybean, is bred based on Danbo black soybean introduced from Japan in 1996 by Gaoyou Vegetable Cultivation Technology Station and Yangzhou Agricultural Technology Promotion Station. It was named in 2014 by Jinagsu Crop Cultivar Approvement Committee. The cultivar is high-yielding with high quality, big seeds, high resistance to stress, as well as high health-care value.
