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1. Review: on maize grain harvest mechanization and its influencing factors | |||
Mukti Marasini,Zhang Guiping,Zhang Shunfeng,Guan Xia,Liu Yao,Zhang Fenglu | |||
Agronomy 15 July 2019 | |||
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Abstract:Mechanically harvesting is important indicator of technology transformation in agricultural production, increase farm efficiency, income and productivity and solves the contradiction between labour shortage and maize production, but often increase the grain lost, ear lost and breakage percentage due to high grain moisture content at harvest which is the key problem of harvest mechanization in maize production. This paper reviewed relationship between the grain moisture content and its relation to grain filling, agronomy character and management, genetic character and environmental factor. The effect of moisture content on these factor and provide the possible way to increase the harvest mechanization also analyzed. The result provide a basis for increase maize mechanization harvest by selecting suitable varieties with the fast dehydration rate and adopt to the environmental condition. Improvement of maize varieties should done through the breading in concern of yield and quality, lodging resistance, fast dehydration rate and low moisture content at physical maturity. | |||
TO cite this article:Mukti Marasini,Zhang Guiping,Zhang Shunfeng, et al. Review: on maize grain harvest mechanization and its influencing factors[OL].[15 July 2019] http://en.paper.edu.cn/en_releasepaper/content/4749379 |
2. Mapping QTLs for Rice Heat Tolerance at Heading Stage | |||
Zhang Changquan,Chenfei,Hongran,Li Qianfeng,Liu Qiaoquan | |||
Agronomy 25 April 2017 | |||
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Abstract:In this paper, a japonica rice (Oryza sativa L.) variety Nipponbare, an indica variety 9311 and a set of chromosome segment substitution lines (CSSLs) which were generated using Nipponbare as the recipient parent and 9311 as the donor parent were used as the experimental materials. The CSSLs were grown in 2012 (normal temperature condition) and 2013 (high temperature condition) in Yangzhou, Jiangsu, and were used to map the quantitative trait loci (QTLs) for heat tolerance, based on the heat tolerance index [(The seed setting rate under normal temperature condition - The seed setting rate under high temperature condition) / The seed setting rate under normal temperature condition]. As a result, three QTLs for heat tolerance in rice were mapped on chromosomes 2, 4 and 12, respectively. They had LOD (logarithm of odds) scores of 2.56, 4.02 and 2.79, and contribution rates of 4. 95%, 7.99% and 5.44%. Among them, qHT12.1 showed positive effect, while qHT2.1 and qHT4.1 showed negative effect on heat tolerance. The results lay a foundation for the fine mapping and cloning of the QTLs and genes related to heat tolerance, and for the breeding of heat-tolerant rice varieties. | |||
TO cite this article:Zhang Changquan,Chenfei,Hongran, et al. Mapping QTLs for Rice Heat Tolerance at Heading Stage[OL].[25 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4729165 |
3. Based on Infrared Thermal Imaging Technology in Rice Water Stress Index Test | |||
GAO Mingchao,ZHANG Wenzhong,HAN Yadong,YAO Chen,WANG Yitao,DING Guohua,ZHANG Zhenyu | |||
Agronomy 28 February 2013 | |||
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Abstract:Observed by infrared thermal imaging technology, in the test rice canopy temperature were measured under different irrigation conditions, taking the Idso empirical model to determine the lower bound equation of the canopy-air temperature differences, and so to get the best period of observing the rice water deficit by the CWSI, in addition the relationship of the CWSI, soil water content and transpiration rate were also analyzed. The preliminary test analysis showed that the CWSI can reflect the rice water stress conditions well. | |||
TO cite this article:GAO Mingchao,ZHANG Wenzhong,HAN Yadong, et al. Based on Infrared Thermal Imaging Technology in Rice Water Stress Index Test[OL].[28 February 2013] http://en.paper.edu.cn/en_releasepaper/content/4524293 |
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