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Sweet Corn Quality Traits Genetic Research

Enough to prevent negative, leading to pollution incidents have occurred. However, sewage, smoke, odor can be felt directly in, and soil pollution is invisible kind of pollution, which often can not give people the feeling of directly, but through other means to express, such as food production ,[link widoczny dla zalogowanych], crops,[link widoczny dla zalogowanych], vegetable yield and quality decline. A heavy metal pollution, according to incomplete statistics, China's cultivated land area of 26.67 million contaminated hm2, of which the industrial covering material stockpiles and Huitian 133,000 hm, most of them concentrated in the economically developed regions. By heavy metals cadmium,[link widoczny dla zalogowanych], arsenic, lead, chromium, mercury pollution of farmland close to 20 million hm, of the total land area of 1 / 5, where arable land 13,300 Cadmium hm, involving 11 provinces and 25 districts; by mercury pollution 32000 hm, involving 15 provinces in 21 regions】. Heavy metal pollution in the country each year by up to 12 million of food t, caused direct economic losses of more than 200 billion yuan. Soil Zhu Yong, Ningbo Academy of Agricultural Sciences, 31504O, Tel: 13336633768 Xiaoxiao Jiang, Xu Xiuqin, Ye Yufei, Ningbo Academy of Agricultural Sciences Received date :2007-04-03 soil pollution causes harmful substances accumulate in crops, and through the food chain into the body, causing various diseases, and ultimately harmful to human health. Soil pollution directly affect the soil ecosystem structure and function, will eventually pose a threat to ecological security. However, the area of soil pollution, the distribution and extent is unclear, leading to a lack of targeted prevention measures. Heavy metal pollution of farmland from sewage irrigation, mining and smelting and other China's industrial enterprises, Sewage irrigation is an important source of heavy metal pollution of farmland. The second national census showed that sewage irrigation, the country of 57 typical heavy metal pollution in wastewater irrigation sewage irrigation area has reached 14.6% of the total area of investigation, of which an area of heavy metal pollution of cadmium contamination of soil area exceeding 56.9%, more than The first sewage irrigation census (1977 to 1982) exceeded the area of farmland increased by 1 percent. The southeast coast of sewage irrigated soil Hg, As, Cd, Cu, Zn and other heavy metals than the soil two standard sewage irrigation area the total area of 45.5%. Phosphate fertilizer (phosphate rock containing cadmium, etc.) and application of pesticides such as fungicides and other large agricultural soils have increased cadmium, copper and other heavy metal pollution. As feed additives (such as pig feed) contains copper and other heavy metals, animal manure and other organic fertilizer field heavy metal pollution has become one of I. 【4] Peng Zhonghua Gu Jin-xiang, Yang Xiaorong, et al. Major Characters Special Maize and Correlation Analysis of combining ability 【J]. Seed, 2002 (2): 31 ~ 33 【5] Wang Xiaoming, Xie Zhenwen, has Mu-heng, et al. Sweet corn ear morphology and quality traits and genetic characteristics of 【J]. Agricultural Sciences in China, 2O05, 38 (9): 1931 ~ 1936 【6] Training Properties, Wang Yulan, Zhao Rengui, et al. Sweet corn endosperm mutant gene identification of 【J]. Jilin Agricultural University, 1992,21 (1): 10 ~ 11,15 【7] Luogao Ling, Wu Kai. More recessive the main quality of sweet corn homozygous inheritance of traits 【J]. Corn 2005,13 (3): 6 ~ 9 【8] Wu Kai, Zhang Huiying, Weijia Chuan, et al. Double homozygous recessive gene breeding sweet corn 【J]. Guangxi Agricultural University 1997,16 (3): 171 ~ 174 【9] Qintai Chen, LAIYANG AGRICULTURAL COLLEGE, Jiangshou Hua, et al. Genetic Mutant Gene for Improving Particular corn - V. Sweet Corn and utilization of the effects of mutant gene 【J]. Corn, 2O04, 12 (3) :9-12 【lO] Wang Xiaoming, has Mu-heng, LE Su-ju. Sweet corn fresh ear yield and sugar content analysis of combining ability and genetic characteristics 【J]. Northwest A & F University (Natural Science), 2005,7 (7): 57 ~ 6O 【l1] Qi new,[link widoczny dla zalogowanych], Jiang Shuo, Cao Lijuan, et al. Sweet Corn Quality Traits of 【J]. Jilin Agricultural University, 2006,4 (2): 136 ~ 138 【12] Wang Zhenhua. Sweet corn quality traits and agronomic traits of some 【J]. Maize Science, 1998,6 (2) :22-25 【13] Lupin. Biotechnology and its application in sweet corn breeding 【J]. Henan Agricultural Sciences, 2002 (8): 12 ~ 1331
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