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小麦主要品质性状相关性及主成分分析 总被引：5，自引：3，他引：2
为了评价小麦主要品质性状对小麦品质贡献关系，对219份小麦品系品质性状进行相关性和主成分分析。本研究主要通过多种粉质仪和近红外谷物分析仪依并依据国家粮食检验标准对小麦多个品质性状进行检验。结果表明：变幅较大的是容重和最大拉伸阻力，变幅较小的是湿面筋含量和吸水率；稳定时间变异系数最大，为41.85%。容重与硬度，蛋白质含量和湿面筋含量呈极显著负相关；硬度与吸水率和延展性相关性最高；除了容重，沉降值与其它品质呈极显著正相关；蛋白质含量和湿面筋含量与容重呈极显著负相关；吸水率与延展性和最大拉伸阻力呈现极显著正相关，与稳定时间呈极显著负相关；稳定时间与拉伸面积、延展性和最大拉伸阻力呈极显著正相关；拉伸面积与延展性和最大拉伸阻力皆呈极显著正相关。主成分分析可将小麦主要品质性状综合为沉降因子、面团因子和容重因子，累积贡献率达到93.54%，基本反映小麦品质性状的全面信息。研究结果将为小麦品质性状的有效改良及优良品质小麦品种选育提供理论基础和参考依据。研究结果将为小麦加工品质的预测及小麦优质品种选育提供理论基础和参考依据。 相似文献
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小麦品质性状分子标记多重PCR体系的建立 总被引：2，自引：1，他引：2
小麦高分子量谷蛋白亚基组成、1B/1R易位、籽粒硬度、直链淀粉含量和穗发芽抗性等性状与加工品质密切相关，建立相关性状的多重PCR体系在小麦品质分子育种中具有重要意义。本研究利用现有品质性状基因的分子标记，建立了适合不同品质类型品种评价和分子聚合育种的3个多重PCR体系，并用已知基因的品种（系）进行验证。多重PCR体系Ⅰ包括ω-secalin（1B/1R）、Vp1B3和Pinb-D1b基因的分子标记检测，可用于一般的品质检测；体系Ⅱ包括ω-secalin、Ax2*、Bx17和Dx5 基因的检测，可望用于强筋小麦品种的选育；体系Ⅲ包括Wx-A1、Wx-B1和Wx-D1位点的检测，可用于淀粉品质或糯小麦的选育。每个体系内的引物之间不存在相互抑制作用和错配，检测品种（系）的结果可靠、重复性好，成本低。3个多重PCR体系用于小麦品质育种的亲本评价和杂交后代优质基因的聚合，将会提高优质专用小麦品种评价和选育的效率。 相似文献
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河南省小麦品种的品质性状分析 总被引：30，自引：2，他引：30
利用１９９９年河南省４０个小麦品种的品质测定结果,对河南省小麦品种的品质性状进行了分析。结果表明,①河南省目前推广和新育成的小麦品种品质性状差异较大,其中变异较大的是面团形成时间、稳定时间、弱化度,其次是沉降值、面粉质量评价值、面包体积和面包评分。这些小麦品种中中筋粉品种占７５％以上;强筋粉品种约占２０％;弱筋粉品种不足５％。②强筋小麦品种豫麦３４,４７,１４号,宛７９８,豫麦４９号和弱筋品种豫麦５０,６０号等品种基本解决了高产与优质的矛盾,而且稳产性好、适应性广,适宜黄淮南片麦区广泛种植。③郑州９０２３、小偃５４、漯育麦、陕优２２５、高优５０３等一年初步测定达强筋粉品种标准,洛旱２号达弱筋粉品种标准。④小麦品种的品质性状易受环境条件影响,特别是蛋白质含量、沉降值、面团的物理特性如形成时间、稳定时间、评价值等受 相似文献
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对连云港市13个主要小麦品种作为稻茬小麦进行种植,测定了它们的产量和主要品质性状。淮麦33、连麦7号、连麦8号、连麦6号等小麦品种产量较高,烟农19、连麦7号、济麦22、徐麦33等小麦品种品质较优,达到了优质强筋小麦标准。结合产量、主要品质性状、抗冻性等综合指标考虑,连云港市目前生产应选择应用连麦7号、烟农19、济麦22、淮麦33等小麦品种,以达到小麦生产的优质、高产、高效。 相似文献
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小麦多品质性状相关性的初步分析 总被引：1，自引：0，他引：1
小麦多品质性状相关性的初步分析于光华，王乐凯，赵迺新（黑龙江省农业科学院，哈尔滨，１５００８６）关于小麦品质性状间的相关分析，国内外学者均有报道。但这些研究和报道，均为一个品质性状与另一个品质性状或一个品质性状与多个品质性状间的相关分析，而多个品质性... 相似文献
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YANG Xin-Lei ZHOU Xiao-Dong WANG Sheng-Fen LI Zhi-Kun ZHANG Yan LIU Heng-Wei WU Li-Qiang ZHANG Gui-Yin MA Zhi-Ying 《棉花学报》2013,25(6):503-509
Using bioinformatics methods and meta-analysis with BC1 map as reference, 92 cotton fiber quality QTL collected from both BC1 and BC1F2 populations constructed previously were used to construct a QTL integrated map for QTL analysis in this study. The five hundred ninety-nine loci were mapped into 26 chromosomes with an average distance between adjacent markers of 5.96 cM and covered 3,571.9 cM. Sixty-three QTL of fiber qualities related were integrated into the new reference map. The fifteen meta-QTL were mapped on 12 chromosomes by the meta-analysis method and also QTL clusters have been discovered on chromosome 9, 16 and 24. The major meta-QTL of Meta-QTL9-1 derived from five QTL on chromosome 9, could explain 17.16% of phenotypic variance. The meta-QTL16-1 derived from ten QTL on chromosome 16, could explain 12.28% of phenotypic variance. And three meta-QTL derived from nine QTLs on chromosome 24, could explain 16.12%,16.69% and 18.27% of phenotypic variance, respectively. On average, one meta-QTL derived from two QTLs on the other chromosomes. The results indicated that these meta-QTL could be used in improving fine QTL mapping and molecular-assisted selection of cotton fiber qualities in breeding. 相似文献
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胡麻农艺性状与品质性状的相关性分析 总被引：8，自引：2，他引：8
为了研究胡麻主要农艺性状与品质性状间的相互关系,为胡麻品质育种提供理论依据,以256份胡麻品种资源为材料,应用简单相关和典型相关分析方法,对胡麻主要农艺性状和品质性状间的相关性进行了分析。结果表明：胡麻农艺性状和品质性状间存在显著地相关性,通过典型相关分析可以归纳出6对主要典型变量,占两组性状间总相关信息的99.30%,在二者典型相关中起决定作用的主要性状有千粒重、单株果数、单株产量、单株分茎数及含油率、油酸、亚油酸、亚麻酸含量。其中,前3对典型变量所包含的相关信息分别占两组性状间全部相关信息的45.47%、30.53%和13.51%,所凝聚的生物学信息主要是千粒重与含油率、单株果数与油酸及亚麻酸含量、单株分茎数与含油率的相关性,表明千粒重大、单株果数多而分茎数较少的品种含油率及油酸的含量较高。因此,通过农艺性状可以实现对胡麻品质性状的间接选择。 相似文献
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黑龙江省水稻根系性状与地上部性状的关系 总被引：3，自引：1，他引：2
为了探讨寒地水稻根系性状与地上部性状在不同生育阶段的关系,以黑龙江省的3个超级稻品种和3个普通品种为试验材料进行田间试验。结果表明,根长在不同的生育时期与结实率、各节间长、粗和粒数、一次支梗数呈正相关;根系体积与粒数、株高、与一次枝梗数和二次枝梗数在分蘖盛期为负相关,拔节孕穗期以后为正相关;根系干重在分蘖盛期与穗数呈极显著的负相关（r=-0.92**）,而与穗粒数、一次枝梗数和一次枝梗粒数均呈极显著的正相关的关系。根冠比在齐穗后与产量呈显著或极显著正相关（r=0.84*～0.96**）。 相似文献
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陆地棉铃形和纤维品质的遗传和相关研究 总被引：11，自引：0，他引：11
采用加性-显性及其与环境互作的遗传模型,对8个陆地棉亲本的F1代15个组合的铃长、铃宽、铃长/铃宽（长宽比）等3个铃形性状以及5项纤维品质指标的两年资料,进行了遗传方差分量分解和成对性状间的遗传效应的相关分析。结果表明,铃形性状和纤维品质性状主要受加性效应的影响,显性效应也有较大作用;铃长与长宽比的广义和狭 相似文献
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为明确油菜茎秆强度相关性状在不同时期的变化特点及其与农艺性状间的关系,以四川地区茎秆强度不同的10份甘蓝型油菜自交系为研究材料,对茎秆强度相关性状间和茎秆强度相关性状与主要农艺性状进行相关性分析.茎秆强度相关性状间的相关分析结果表明:成熟期为油菜茎秆研究的最适时期.在这一时期,穿刺强度和抗折强度呈极显著正相关(r=0.78??),壁厚与穿刺强度、抗折强度和纤维素含量均呈极显著正相关(r=0.73??,0.67??,0.58??),但纤维素含量与木质素含量呈显著负相关(r=-0.48?).通过对茎秆强度相关性状与主要农艺经济性状进行相关性分析,结果表明:壁厚和穿刺强度均与株高呈极显著正相关(r=0.73??,0.60??),而茎粗与一次分枝数和单株产量间呈显著正相关(r=0.66?,0.53?),与角果长度呈显著负相关(r=-0.65?).结果表明,甘蓝型油菜茎秆强度相关性状间关系密切,且对茎秆强度相关性状的改良不会造成经济价值的巨大损失. 相似文献
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以17个优树自由授粉家系种子和子代一年生苗为试验材料,分析了种子性状和幼苗生长差异,并进行相关分析和主成分分析,以探讨薄壳山核桃不同家系种子性状、变异规律及与子代苗期生长的关系。结果表明:薄壳山核桃家系间种子性状、幼苗生长存在丰富的变异,种子性状变异系数为1.63%~11.85%,幼苗生长的变异系数为4.91%~17.26%,种壳厚、发芽率、茎干重和叶干重因变异程度高,可作为育种和优良单株选择重要性状指标;百粒重与种长、种宽呈极显著正相关,长/宽与种长呈极显著正相关,与种宽呈负相关但不显著,说明其长/宽主要取决于种长。种子的种宽变化很小,种长变化较大,地径与种长呈显著负相关,说明种子过长对植株增粗生长有阻碍作用;通过主成分综合评价,初步筛选出家系1、8、4、3、7、12号和9号表现较优的子代,为薄壳山核桃优良植株选择提供参考。 相似文献
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The present study was conducted to investigate the genetic inheritance of morpho-physiological leaf traits in chickpea (Cicer arietinum L.). The experimental material comprised six generations, viz., two inbred parents, ‘T88’ and ‘Bold Seeded’, having contrasting leaf traits, and their derived F1, F2 and backcross of F1 to either parent (B1 and B2). The experiment was randomized complete block design with three replications. Genetic parameters were estimated by generation mean analysis using all the six generations. Data were collected on individual plants within each family just before flowering on leaflet area (LA), number of leaflets per leaf (LL), rachis length (RL), and leaflet density (LD), which was calculated as number of leaflets per unit length of rachis. A simple additive-dominance model was found to be adequate to describe the inheritance of LL and LA, while dominance × dominance (i.e. [1]) and additive × dominance (i.e. [i]) interactions were also significant for RL and LD, respectively. Improvement or seed yield per plant may result from selection for LA by improving both RL and LL. Leaflet area may be included in the ongoing selection schemes, as a supplementary trait to increase the speed of improvement in seed yield per plant. Lanceolate leaflet shape was observed to be monogenically dominant over obovate leaflet shape, and segregated independently from purple/white flower color. 相似文献
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Genetic Analysis of Developmental Traits in Chickpea 总被引：1，自引：0，他引：1
Chickpea (Cicer arietinum L.) is an important legume crop in India. The present study was conducted to investigate the inheritance of several developmental traits in three crosses of chickpea, viz., WFWG III’בT20’, ‘T88’בBold Seeded’, and ‘NP34’בP1528-1-1’, each having seven generations. The seven generations were P1, P2, F1, B1, B2, F2, and F3. The experimental lay-out was randomized complete block design with three replications. Data were acquired on days to flowering (DF), days to maturity (DM), plant height in cm (PH), number of primary branches (PB), and number of secondary branches (SB). Generation mean analysis was used to estimate the genetic components; narrow sense heritability was estimated using variance components; and correlation analysis to estimate correlation coefficients among different traits. Genetic differences were found in all three crosses for all traits studied. Additive, dominance, and epistatic effects were found for many traits'. Duplicate epistasis was observed for all traits except number of PB. Higher order interactions and/or linkage were detected for DM and SB. For many traits the relative magnitudes of the genetic effects differed among crosses, thus the extrapolation to other crosses may be difficult. The inheritance becomes more complex as the fate of the character is decided at a later stage in the life cycle. Positive heterosis was observed for some traits, but the exploitation of this component may not Feasible since stable male sterile lines are not available. Early maturity and high yield ‘may be selected independently because of the absence of any significant correlation between these two traits. 相似文献