籼粳稻杂交后代籼型频率与品质性状的相关性
发布时间：2018-09-04 13:41
【摘要】：籼稻和粳稻是亚洲栽培稻的两个亚种,在形态、生理、生化性状诸多方面都存在明显的差异,通过籼稻和粳稻杂交可产生丰富的变异,为选育优质高产品质奠定遗传变异基础。本研究以籼粳稻Sasanishiki和Habataki回交重组自交系群体为试验材料研究了籼型频率与产量、品质及其支链淀粉链长的关系,选题对籼粳稻杂交优质高产育种有重要理论和实践意义。结果表明:1、BIL群体在0.028～0.390之间连续分布,是研究籼型血缘对北方粳稻品质性状影响的良好材料;BIL群体籼型频率与有效穗数、结实率、千粒重、生物产量、经济产量、理论产量、经济系数均呈现负相关,其中有效穗数、经济系数、理论产量和实际产量达到显著或极显著水平,籼型频率与每穗粒数正相关但是并没有达到显著水平。籼型频率与糙米率、精米率、整精米率都表现为负相关其中籼型频率与糙米率的负相关达到极显著水平。籼型频率与垩白率、垩白度的相关有正负之别,但是均未达到显著水平且相关系数很小,籼型频率与长宽比表现为正相关但是也没有达到显著水平。2、Habataki籽粒长宽比显著高于Sasanishiki,其他加工品质和外观品质差异大多没有达到显著水平,BILs群体籼型频率除与糙米率极显著负相关外,与其他加工和外观品质相关性均不显著。HabatakiAAC、Fb3、RS显著高于Sasanishiki,而Fa显著低于后者,BILs群体籼型频率与上述淀粉特性的相关性都不显著。HabatakiPKV、HPV、CPV显著高于Sasanishiki,BILs群体籼型频率只与PKV呈显著的负相关。3、Sasanishiki米饭外观、口感和综合评价显著优于Habataki,分析BILs群体籼型频率与蒸煮食味品质关系发现,籼型频率与外观、口感和综合评价均呈极显著负相关,特别是与综合评价的相关系数达到-0.933,决定系数高达0.870。由此可知,籼型频率越高米饭外观和口感越差,综合评价越低。
[Abstract]:Indica rice and japonica rice are two subspecies of Asian cultivated rice. There are obvious differences in morphological, physiological and biochemical characters. The hybrid of indica rice and japonica rice can produce abundant variation, which lays a genetic variation foundation for breeding high quality and high yield quality. The relationship between frequency of indica type and yield, quality and amylopectin chain length of indica japonica rice (Sasanishiki) and Habataki backcross inbred line population was studied in this study. This study has important theoretical and practical significance for indica japonica hybrid breeding with high quality and high yield. The results showed that the population of BIL was continuously distributed between 0.028 and 0.390, and it was a good material to study the effect of blood relationship of indica on quality traits of northern japonica rice. The population frequency, effective panicle number, seed setting rate, 1000-grain weight, biological yield, economic yield and theoretical yield were studied. The economic coefficients were all negatively correlated, among which the effective panicle number, economic coefficient, theoretical yield and actual yield reached significant or extremely significant level, and the frequency of indica type was positively correlated with the number of grains per panicle, but it did not reach the significant level. The frequency of indica rice was negatively correlated with the brown rice rate, the milled rice rate and the whole milled rice rate, and the negative correlation between the frequency of indica rice type and the brown rice rate reached a very significant level. The correlation between frequency of indica type and chalkiness rate and degree of chalkiness was positive or negative, but the correlation coefficient was not significant and the correlation coefficient was very small. The frequency of indica rice was positively correlated with the aspect ratio of length to width, but the aspect ratio of grain length to width was significantly higher than that of other processing quality and appearance quality of Sasanishiki,. The frequency of indica rice population except brown rice was not significantly higher than that of other processing quality and appearance quality of indica rice. The rate was significantly negative, HabatakiAAC Fb3RS was significantly higher than Sasanishiki, while Fa was significantly lower than that of the latter. Habataki Sasanishiki, was significantly higher than Sasanishiki,BILs in indica rice frequency and starch characteristics. Habataki Sasanishiki, was significantly higher than Sasanishiki,BILs in indica rice. Negative correlation. 3 Sasanishiki rice appearance, Taste and comprehensive evaluation were significantly better than Habataki, analysis of BILs population Indica frequency and cooking quality found that the frequency of indica type and appearance, taste and comprehensive evaluation were significantly negative correlation. In particular, the correlation coefficient with comprehensive evaluation reached -0.933, and the determining coefficient reached 0.870. Therefore, the higher the frequency of indica rice is, the worse the appearance and taste of rice is, and the lower the comprehensive evaluation is.
【学位授予单位】：沈阳农业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S511
，
本文编号：2222269
[Abstract]:Indica rice and japonica rice are two subspecies of Asian cultivated rice. There are obvious differences in morphological, physiological and biochemical characters. The hybrid of indica rice and japonica rice can produce abundant variation, which lays a genetic variation foundation for breeding high quality and high yield quality. The relationship between frequency of indica type and yield, quality and amylopectin chain length of indica japonica rice (Sasanishiki) and Habataki backcross inbred line population was studied in this study. This study has important theoretical and practical significance for indica japonica hybrid breeding with high quality and high yield. The results showed that the population of BIL was continuously distributed between 0.028 and 0.390, and it was a good material to study the effect of blood relationship of indica on quality traits of northern japonica rice. The population frequency, effective panicle number, seed setting rate, 1000-grain weight, biological yield, economic yield and theoretical yield were studied. The economic coefficients were all negatively correlated, among which the effective panicle number, economic coefficient, theoretical yield and actual yield reached significant or extremely significant level, and the frequency of indica type was positively correlated with the number of grains per panicle, but it did not reach the significant level. The frequency of indica rice was negatively correlated with the brown rice rate, the milled rice rate and the whole milled rice rate, and the negative correlation between the frequency of indica rice type and the brown rice rate reached a very significant level. The correlation between frequency of indica type and chalkiness rate and degree of chalkiness was positive or negative, but the correlation coefficient was not significant and the correlation coefficient was very small. The frequency of indica rice was positively correlated with the aspect ratio of length to width, but the aspect ratio of grain length to width was significantly higher than that of other processing quality and appearance quality of Sasanishiki,. The frequency of indica rice population except brown rice was not significantly higher than that of other processing quality and appearance quality of indica rice. The rate was significantly negative, HabatakiAAC Fb3RS was significantly higher than Sasanishiki, while Fa was significantly lower than that of the latter. Habataki Sasanishiki, was significantly higher than Sasanishiki,BILs in indica rice frequency and starch characteristics. Habataki Sasanishiki, was significantly higher than Sasanishiki,BILs in indica rice. Negative correlation. 3 Sasanishiki rice appearance, Taste and comprehensive evaluation were significantly better than Habataki, analysis of BILs population Indica frequency and cooking quality found that the frequency of indica type and appearance, taste and comprehensive evaluation were significantly negative correlation. In particular, the correlation coefficient with comprehensive evaluation reached -0.933, and the determining coefficient reached 0.870. Therefore, the higher the frequency of indica rice is, the worse the appearance and taste of rice is, and the lower the comprehensive evaluation is.
【学位授予单位】：沈阳农业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S511
，
本文编号：2222269
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