Characterization and Gene Mapping of a Lesion Mimic Mutant g303 in Rice     

LIU Lin  #  ZHANG Ying xin  #  LI Zhi  LIU Qun en  YU Ning  SUN Bin  YANG Zheng fu  ZHOU Quan  CHENG Shi hua  CAO Li yong 《中国水稻科学》2014,28(5):465

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Analysis of the independent-and interactive-photo-thermal effects on soybean flowering     

WU Ting-ting  LI Jin-yu  WU Cun-xiang  SUN Shi  MAO Ting-ting  JIANG Bing-jun  HOU Wen-sheng  HAN Tian-fu 《中国农业科学(英文版)》2015,(4):622-632

Soybean(Glycine max(L.) Merr.) is a typical short-day and warm season plant, and the interval between emergence and flowering has long been known to be regulated by environmental factors, primarily photoperiod and temperature. While the effects of photoperiod and temperature on soybean flowering have been extensively studied, a dissection of the component photo-thermal effects has not been documented for Chinese germplasm. Our objective of the current study was to evaluate the independent- and interactive-photo-thermal responses of 71 cultivars from 6 ecotypes spanning the soybean production regions in China. These cultivars were subjected in pot experiments to different temperature regimes by planting in spring(low temperature(LT)) and summer(high temperature(HT)), and integrating with short day(SD, 12 h), natural day(ND, variable day-length), and long day(LD, 16 h) treatments over two years. The duration of the vegetative phase from emergence to first bloom(R1) was recorded, and the photo-thermal response was calculated. The outcome of this characterization led to the following conclusions:(1) There were significant differences in photo-thermal response among the different ecotypes. High-latitude ecotypes were less sensitive to the independent- and interactive-photo-thermal effects than low-latitude ecotypes; and(2) there was an interaction between photoperiod and temperature, with the effect of photoperiod on thermal sensitivity being greater under the LD than the SD condition, and with the effect of temperature on photoperiodic sensitivity being greater under the LT than the HT condition. The strengths and limitations of this study are discussed in terms of implications for current knowledge and future research directions. The study provides better understanding of photo-thermal effects on flowering in soybean genotypes from different ecotypes throughout China and of the implications for their adaptation more broadly.  相似文献   

Isolation and characterization of Fusarium verticillioides from maize in eastern China     

Jianbo Qiu  Jianhong Xu  Fei Dong  Xianchao Yin  Jianrong Shi 《European journal of plant pathology / European Foundation for Plant Pathology》2015,142(4):791-800

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Summer drought decreases Leymus chinensis productivity through constraining the bud,tiller and shoot production     

Junfeng Wang  Yujie Shi  Yunna Ao  Dafu Yu  Jiao Wang  Song Gao  Johannes M. H. Knops  Chunsheng Mu  Zhijian Li 《Journal of Agronomy and Crop Science》2019,205(6):554-561

Extreme drought events can directly decrease productivity in perennial grasslands. However, for rhizomatous perennial grasses it remains unknown how drought events influence the belowground bud bank which determines future productivity. Ninety‐day‐long drought events imposed on Leymus chinensis, a rhizomatous perennial grass, caused a 41% decrease in the aboveground biomass and a 28% decrease in belowground biomass. Aboveground biomass decreased due to decrease in both the parent and the daughter shoot biomass. The decreases in daughter shoot biomass were due to reductions in both the shoot number and each individual shoot weight. Most importantly, drought decreased the bud bank density by 56%. In addition, drought induced a bud allocation change that decreased by 41% the proportion of buds that developed into shoots and a 41% increase in the buds that developed into rhizomes. Above results were supported by our field experiment with watering treatments. Thus, a 90‐day‐long summer drought event decreases not only current productivity but also future productivity, because the drought reduces the absolute bud number. However, plasticity in plant development does partly compensate for this reduction in bud number by increasing bud development into rhizomes, which increases the relative allocation of buds into future shoots, at the cost of a decrease in current shoots.  相似文献   

延边黄牛ATF3基因组织表达及其多态性与肉质性状的相关性分析     

邵静  尹宝珍  焦石  张珈溯  张洛萌  耿春银  夏广军 《中国畜牧兽医》2020,47(2):488-496

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浅谈高校思想政治教育面临的挑战及应对策略     

郑世堃 《吉林农业科技学院学报》2015,(2):122-124

当今,国内外社会形势发生了重大的变化,给高校大学生思想政治教育工作带来巨大挑战的同时也带来了新的机遇。积极探索高校思想政治教育改革与创新,适应新形势,新要求,对于促进大学生综合素质提高意义重大。  相似文献   

Soil potential labile but not occluded phosphorus forms increase with forest succession     

Hongzhi Zhang  Leilei Shi  Dazhi Wen  Kailiang Yu 《Biology and Fertility of Soils》2016,52(1):41-51

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Mapping QTL of Fiber Yield and Quality Traits in F2 Populations of Chromosome Segment Substitution Lines from Gossypium hirsutum × Gossypium barbadense     

Guo Lixue  Shi Yuzhen  Li Junwen  Gong Juwu  Liu Aiying  Shang Haihong  Gong Wankui  Chen Tingting  Ge Qun  Sun Jie  Yuan Youlu 《棉花学报》2015,27(6):550-560

In this study, F₂ populations from two chromosome segment substitution lines MBI7455 and MBI7358, were quantified using SSR to evaluate the parents' genotype and detect QTL related to fiber quality plus yield traits of cotton. Results show that the recurrent parent (CCRI45) hosted 96.70% and 95.60% of chromosome segment substitution in MBI7455 with 12 chromosome segments and in MBI7358 with 16 chromosome substitution segments of Gossypium barbadense, respectively. In the F₂ population, the average rate of chromosome substitution of the recurrent parent (CCRI45) was 96.44%, and the average segments of chromosome substitution of Gossypium barbadense was 13.42, with an average segments of homozygous donor chromosome value of 3.90. Analysis showed 19 fiber quality-related QTL with a phenotypic variance of between 2.52%-13.11% and seven yield traits-related QTL with a range of 2.93%-11.40% phenotypic variance, resulting in a total of 26 QTL. The CSSLs could be used to detect QTL for fiber yield and quality traits, which offer an important foundation for the cotton molecular-assisted breeding.  相似文献   

汞矿区周围环境及畜禽砷、铅、铬污染情况调查     

覃朗  万洁妤  艾淼  施云刚  吴荣华  欧德渊 《贵州畜牧兽医》2015,39(2):7-10

目的:对汞矿周围环境和畜禽进行砷、铅、铬污染调查,为掌握其污染情况提供依据。方法:电感耦合等离子体质谱法(ICP-MS测定。结果:环境中水源污染铅、砷严重,蔬菜、粮食受到不同程度污染;鸡、鸭组织铅污染严重;猪、牛、羊砷、铅污染严重,部分组织受铬轻度污染。结论:汞矿周围环境以及饲养的畜禽存在严重砷、铅污染,轻度铬污染。  相似文献   

椭圆嗜蓝层孔菌子实体化学成分研究     

李景旭  昝立峰  包海鹰  李丹花  叶嘉 《食用菌学报》2017,(3):46-50

椭圆嗜蓝层孔菌(Phellinus ellipsoidea)子实体甲醇提取物依次用石油醚和乙酸乙酯萃取,其乙酸乙酯分部经柱层析分离得到11个化合物。经鉴定这11个化合物分别为:苯并(1,2-b,5,4-b′)二呋喃-3,5-二酮-8-甲酸甲酯(1)、原儿茶酸(2)、4-(3,4-二羟苯基)-3-丁烯-2-酮(3)、原儿茶醛(4)、Hispidin(5)、Hispolon(6)、Inoscavin A(7)、Phelligridin K(8)、Inoscavin C(9)、Inoscavin E(10)和Inonoblins B(11),其中化合物2、4、7、10为首次从该物种中分离得到。  相似文献