共查询到20条相似文献，搜索用时 93 毫秒
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rch in young people's values,and uphold the unity of pluralitic val 相似文献
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LIUBaoshen CHENCuixia YINLiqing ZHANGJianjun 《中国水稻研究通报》1997,5(2):8-9
Silicon is one of essential elements for rice growth. Deficiency of silicon in plants would affect the physiological metabolism of rice.Considering the important role of silicon to rice and no silicon being used in ordinary anther culture medium, we added absorbable silicon at different concentrations into either or both in-duction media (IM), differentiation media(DM) to study the effect of silicon on anther culture efficiency. 相似文献
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SHENXihang WANGLei YANGShihua XIEFuxian 《中国水稻研究通报》1998,6(4):9-11
The adaptability of rice varieties is one of the most concerned questions to rice breeders. In rice breeding, combined variety test and regional trials which included multiple genotypes and environments were conducted to identify the adaptability of new rice varieties. In most regional trials, interaction between genotype and environment is significant, so it is important to analyze the interaction for estimating the adaptability of rice varieties. 相似文献
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The present review discusses the known synthetic routes to the lamellarin alkaloids published until 2014. It begins with syntheses of the structurally simpler type-II lamellarins and then focuses on the larger class of the 5,6-saturated and -unsaturated type-I lamellarins. The syntheses are grouped by the strategy employed for the assembly of the central pyrrole ring. 相似文献
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Brown planthopper (Nilaparvata lugens, BPH) is one ofthe most damaging rice insect pests. Recent studies showedthat lectin (GNA), coded by the gna gene from snowdrop(Galanthus nivalis ) was toxic to BPH in artificial diet as-say (Powell et al, 1993, 1995). Here we report the des de-velopment of homozygous transgenic rice lines contained the gna gene and the BPH bioassay test of the homozygous lines.Mature seed-derived callus of japonica rice Fyi 105was bombarded with 2 plasmids, pWRG15… 相似文献
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A method to measure the rice kernel chalkiness objectively 总被引：2，自引：0，他引：2
XIAOLangtao LINWanhuang LIDonghui HONGBin 《中国水稻研究通报》2001,9(1):12-13
Ｒｉｃｅｋｅｒｎｅｌｃｈａｌｋｉｎｅｓｓｉｓａｎｉｍｐｏｒ ｔａｎｔｑｕａｌｉｔｙｃｈａｒａｃｔｅｒ．Ｂｅｉｎｇｔｈｅｕｎ ｔｒａｎｓｐａｒｅｎｔ ｐｏｒｔｉｏｎｓｉｎ ｇｒａｉｎｅｎ ｄｏｓｐｅｒｍ，ｃｈａｌｋｉｎｅｓｓｉｓａｌｗａｙｓｍｅａ ｓｕｒｅｄｂｙｓｏｍｅｓｕｂｊｅｃｔｉｖｅｅｙｅ＿ｊｕｄｇｉｎｇｍｅｔｈｏｄｓｄｏｍｅｓｔｉｃａｌｌｙ ａｎｄｉｎｔｅｒｎａ ｔｉｏｎａｌｌｙ．Ｒｅｓｕｌｔｓｍｅａｓｕｒｅｄｂｙｓｕｃｈｍｅｔｈｏｄｓａｒｅｓｕｂｊｅｃｔｉｖｅ，ｉｎａｃｃｕｒａｔｅ，ａｎｄｕｎｓ… 相似文献
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《中国水稻研究通报》1997,(1)
Saikuzuo (N, N'-methylene-di (2-amino-5-sulfurhydrogen-1, 3, 4-thiodiazole)) a good bactericideagainst rice bacterial blight disease, has been usedin China for more than 20 years. In this study,the sensitivity of X. oryzae pv. oryzae (Xoo) tosaikuzuo was tested in vitro and in vivo. Seventy-seven and 11 isolates were collected from Hexian,Anhui Province, and Liuhe, Jiangsu Province, re- 相似文献
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While output for potatoes in China averaged nearly 73 million metric tonnes in 2008–2010, the trends for production, area, and yield have been far more volatile than suggested in earlier studies. A new set of estimated growth rates for potato production in China during the last five decades based on FAO times series data found that periods of rapid expansion were then followed by ones of stagnation and decline. Although increases in potato output have been impressive, China’s share of both regional and global production has declined in recent years as a result. This paper analyses these and other dimensions to the evolution of potato production in China during the last half century by synthesizing previous research before reassessing alternative future projections, highlighting opportunities for industry, and identifying some key topics for future research. 相似文献
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JIAODemao TONGHongyu ZHANGTianxi 《中国水稻研究通报》1994,2(2):4-5
Long time exposure of rice plants to strong light will cause leaves chlorosis due to photooxidation,while the long time exposure to weak light will do them shading. Six varieties-indica hybrid rice Shanyou 63 and its parents Minghui 63 and Zhenshan 97A, indica-japonica hybrid rice Yayou 2 and its parents 02428 and 3037-were identified for their sensibility to photooxidation and shading at the stem elongation stage. 相似文献
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Ｊａｐａｎｅｓｅ ｊａｐｏｎｉｃａｒｉｃｅｃｏｍｍｏｎｌｙｐｒｏｖｉｄｅｓｗｉｔｈａｎｏｖｉｃｉｄａｌｒｅｓｉｓｔａｎｃｅａｇａｉｎｓｔｔｈｅｗｈｉｔｅｂａｃｋｅｄｐｌａｎｔｈｏｐｐｅｒ（ＷＢＰＨ）．Ｓｉｍｉｌａｒｌｙ，ｏｖｉｃｉｄａｌａｃｔｉｖｉ ｔｙｗａｓａｌｓｏｆｏｕｎｄｔｏｐｌａｙａｓｉｇｎｉｆｉｃａｎｔｒｏｌｅｉｎａｓｔａｂｌｅｆｉｅｌｄｒｅｓｉｓｔａｎｃｅｔｏＷＢＰＨｉｎｓｏｍｅＣｈｉｎｅｓｅ ｊａｐｏｎｉｃａｒｉｃｅ．Ｒｉｃｅｖａｒｉｅｔｉｅｓｗｉｔｈｏｖｉｃｉｄａｌｒｅ ｓｉｓｔａｎ… 相似文献
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JIANGYiyuan 《中国水稻研究通报》1993,(1):6-6
The threshing prior to cutting (TPC) harvesting machine system consists of TPC rice harvester “4GQT-1800” and walking track chassis (WTC). 相似文献
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Rice quality in relation to market prices in Yunnan Province 总被引：1，自引：0，他引：1
CHENLijuan FANXingming 《中国水稻研究通报》1996,4(4):10-11
Factors affecting rice quality and their impacts on market price were investigated in this study. On-farm survey and market survey was undertaken in three selected sites namely Kunruing, Dali, and Xishuangbanna in Yunnan Province, China. Market sampling was conducted to determine important rice quality characteristics. 相似文献
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YANGJianchang 《中国水稻研究通报》1995,3(4):9-9
The rice seeds of IR661 (indica); Yanjing 2 (japonica) and Shanyou 53 indica hybrid F_1 were grown in 15 nursery trays (40×20×15cm~2 each), A water stress treatment was carried out at the leaf age 5 by excluding water for 120h. Leaf water potential (LWP) was determined with chamber pressure. Abscisic acid (ABA) content in rice leaves was measured with radioimmnoassay. The content of ABA in the leaves changed a little when LWP was larger than—0.02 MPa, but increased rapidly when LWP was lower than this value. It could be considered that the critical LWP for obvious accumulation of ABA in rice seedling leaves was about—0.02 MPa. 相似文献
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Isolates of X. oryzae pv. or yzae (X. o. o. ) resistant to Saikuzuo [N, N-methylene-di (2 amino-5-sulfurhydrogen-1, 3, 4-thioazole)]were selected from laboratory and field for the study of their characteristics. 相似文献