【摘 要】
：
Amylose content is one dominant factor determining starch properties and it is genetically controlled by the waxy genes (wx),which encode the granule-bounded starch synthase (GBSS) catalyzing the bios
【机 构】
：
National Technique Innovation Center for Regional Wheat Production/National Engineering and Technolo
论文部分内容阅读
Amylose content is one dominant factor determining starch properties and it is genetically controlled by the waxy genes (wx),which encode the granule-bounded starch synthase (GBSS) catalyzing the biosynthesis of amylose.There are usually three WX proteins in common wheat (Triticum aestivum L.),which are separately encoded by the wx-A1a,wx-B1a and wx-D1a genes.These three wx genes locate on the 7AS,4Al and 7DS chromosome arms,respectively.
其他文献
Flowering time (FT) is a critical trait in Brassica rapa cultivation,as it determines the geographical range and timing of crop growth.To identify genes underlying variation in flowering time,66 SSR m
Crops are being always under natural and artificial selection on various traits.Consequently,favorable genes underneath have been selected and inherited although we do not know what they are and where
Breeders are facing the challenge of increasing oilseed crop production worldwide,in a wide range of environmental constraints,especially for oilseed rape (Brassica napus).In this context,improving se
Generation of new allelic combinations is conditioned by the rate of homologous recombination through crossovers (COs) during the first meiosis division in F1 hybrids.But crossovers are subject to str
Several major crop species are current or ancient polyploids.To better describe the genetic factors controlling traits of agronomic interest (QTL),it is necessary to understand the structural and func
There are two genotypes in Barbarea vulgaris:the glabrous type (G-type),which confers resistance to diamondback moth (DBM) and many other insect pests,and the pubescent type (P-type),which is suscepti
Increasing the oil content was the main project in breeding in Brassica napus.Lots of germplasm with higher oil content was obtained in recent years,make clear the molecular mechanism for oil formatio
为研究水稻耐旱性评价体系,设计了＞100％、80％、60％、40％田间持水量4种梯度量化控水处理水平,返青至成熟期间对6个试验品种进行长时期控水处理,实际土壤含水量计算表明,4种设计水平形成了一定的水分梯度并达到了极显著差异；梯度量化控水处理对参试品种的产量和产量结构及其水分利用效率等性状产生了极显著影响。不同梯度量化水平上不同性状之间、品种与性状之间具有复杂的相关关系,品种之间的产量耐旱性差异也
本研究对一个大粒型水稻材料lg1表型、光合、灌浆等生理与遗传特性进行了分析.结果表明,大粒材料lg1田间表现为植株高大,穗长粒大,千粒重达47.58g；光合能力较强,但气孔导度、胞间CO2浓度较对照9311分别小32.1％,3.94％；lg1为同步灌浆,强、弱势粒早、中、后期灌浆贡献率相差不大,强势粒灌浆时间比弱势粒长；遗传分析表明,F2群体的粒长、粒宽、长宽比、粒厚和千粒重均呈连续变异的正态分布
近年来,品质改良已成为我国小麦育种的重要目标,与发达国家相比,国内优质小麦品种,特别是强筋小麦的数量和质量仍有较大差距,造成这种现状的一个重要原因就是缺乏适合育种早代的微量、快速、有效的品质评选技术和方法.高分子量谷蛋白亚基(Hmw-GS)虽仅占贮藏蛋白的10％左右,但对面筋特性起着重要作用,主要影响面团的弹性,是决定小麦加工品质的关键因素之一,成为小麦品质改良的主要研究内容,而准确、快速鉴定HM