[Objective] The aim of this study is to investigate the chromosome pairing of F1 from Aegilops Ventricosa-Aegilops Cylindrica amphiploid × common wheat.[Method] Microsporogenesis and pollen development of Yannong...[Objective] The aim of this study is to investigate the chromosome pairing of F1 from Aegilops Ventricosa-Aegilops Cylindrica amphiploid × common wheat.[Method] Microsporogenesis and pollen development of Yannong15,SDAU18 and their hybrid F1 were observed cytologically by squash method.[Result] The results showed that microsporogenesis and pollen development of two parents including Yannong15 and SDAU18 were basically normal,and their seed setting was also basically normal.However,the microsporogenesis of their hybrid F1 was chaotic.Univalent and bivalent with high frequency of 10.11 and 18.29 per cell respectively occurred in meiotic MI（metphaseI） of PMC（pollen mother cell）.Nevertheless,only quite low frequency of multivalents occurred in meiotic PMC MI.The laggards at meiotic AI（anaphaseI） were 5 per cell on average.The number of micronucleoli in tetrad was 4.43 per cell averagely.The aborted pollen with different frequency occurred at every stage of hybrid F1 pollen development but mainly after single nucleus pollen stage.The fertile pollen rate of hybrid F1 was only 31% at 3-nucleated stage.[Conclusion] This study provides cytogenetics basis for further analysis and utilization of the amphiploid.展开更多
为了揭示氮、磷、钾不同配比的BB肥在小麦产量建成中的作用规律,2013年在枣庄市市中区税郭镇东南村,采用随机区组试验设计,分氮、磷、钾5个不同配比研究了BB肥对小麦产量的影响,揭示了不同配比BB肥作用下小麦叶面积系数的变化规律。结...为了揭示氮、磷、钾不同配比的BB肥在小麦产量建成中的作用规律,2013年在枣庄市市中区税郭镇东南村,采用随机区组试验设计,分氮、磷、钾5个不同配比研究了BB肥对小麦产量的影响,揭示了不同配比BB肥作用下小麦叶面积系数的变化规律。结果表明:基施BB肥的处理能引起小麦叶面积系数的提高,并能改善小麦的产量。以1 hm^2土地基施375 kg氮、165 kg P_2O_5和150 kg K_2O时作用效果最佳,增产幅度达16.9%。展开更多
基金Supported by Doctor Scientific Research Fund from Zaozhuang University~~
文摘[Objective] The aim of this study is to investigate the chromosome pairing of F1 from Aegilops Ventricosa-Aegilops Cylindrica amphiploid × common wheat.[Method] Microsporogenesis and pollen development of Yannong15,SDAU18 and their hybrid F1 were observed cytologically by squash method.[Result] The results showed that microsporogenesis and pollen development of two parents including Yannong15 and SDAU18 were basically normal,and their seed setting was also basically normal.However,the microsporogenesis of their hybrid F1 was chaotic.Univalent and bivalent with high frequency of 10.11 and 18.29 per cell respectively occurred in meiotic MI（metphaseI） of PMC（pollen mother cell）.Nevertheless,only quite low frequency of multivalents occurred in meiotic PMC MI.The laggards at meiotic AI（anaphaseI） were 5 per cell on average.The number of micronucleoli in tetrad was 4.43 per cell averagely.The aborted pollen with different frequency occurred at every stage of hybrid F1 pollen development but mainly after single nucleus pollen stage.The fertile pollen rate of hybrid F1 was only 31% at 3-nucleated stage.[Conclusion] This study provides cytogenetics basis for further analysis and utilization of the amphiploid.
文摘为了揭示氮、磷、钾不同配比的BB肥在小麦产量建成中的作用规律,2013年在枣庄市市中区税郭镇东南村,采用随机区组试验设计,分氮、磷、钾5个不同配比研究了BB肥对小麦产量的影响,揭示了不同配比BB肥作用下小麦叶面积系数的变化规律。结果表明:基施BB肥的处理能引起小麦叶面积系数的提高,并能改善小麦的产量。以1 hm^2土地基施375 kg氮、165 kg P_2O_5和150 kg K_2O时作用效果最佳,增产幅度达16.9%。
