本研究通过综合评价蚕豆品系产量性状在不同试点的丰产性、适应性和稳定性,筛选适应不同生态环境的产量性状稳定的优良品种(系)。同时评价各试点的区分力和代表性,为试点选择提供依据。2017年和2018年在甘肃和政县、康乐县、积石山县、...本研究通过综合评价蚕豆品系产量性状在不同试点的丰产性、适应性和稳定性,筛选适应不同生态环境的产量性状稳定的优良品种(系)。同时评价各试点的区分力和代表性,为试点选择提供依据。2017年和2018年在甘肃和政县、康乐县、积石山县、渭源县、临夏县和漳县6个试点分别种植5个蚕豆品系0215-1-4(L1)、0208-3-1(L2)、0208-3-2(L3)、0323-2-1(L4)、0161-1(L5)与1个对照品种和政尕蚕豆(L6),收获时记录株高、株粒数、小区产量、株荚数、分枝数、百粒重。采用联合方差和GGE(genotype+genotypes and environment interactions,GGE)双标图对产量性状进行基因型和基因型与环境互作分析。联合方差分析表明,6个农艺性状的基因型除小区产量和株高基因型与环境互作效应无显著差异外,其余性状的基因型与×环境互作效应均达到极显著水平(P<0.01);除株高和株粒数基因型×年份互作效应达到极显著水平外(P<0.01),其余农艺性状×年份互作效应无显著差异。相关性分析表明,小区产量与株荚数和株粒数正相关,与株荚数显著正相关(P<0.05),与百粒重负相关。GGE分析结果表明,品种(系)的适应性、丰产性和稳定性以及试点的区分力和代表性均具有较高的GGE变异值,变幅在78.54%~97.38%之间。蚕豆品系L3在康乐县、积石山县、渭源县和临夏县试点的产量适应性均较高,在和政县试点2018年产量适应性最高;丰产性高的品种(系)依次为L3>L2>L6>L4,稳定性最高的品种(系)依次为L4>L1>L5>L3。试点的区分力依次为康乐县2017年、积石山县2017年和2018年,试点的代表性依次为渭源县2017年、康乐县2018年、积石山县2018年。高产且稳定的品系是L3和L4,结合试点的区分力和代表性,最理想的生态区试点是积石山县。本研究利用GGE双标图对甘肃蚕豆参试品种进行产量组分性状分析,为蚕豆品种综合评价提供参考。展开更多
Effective silique number per plant(ESN), seeds per silique(SS), thousand seeds weight(TSW), silique length(SL) and silique density(SD) are important seed yield potential determinant traits in rapeseed(Brassica napus L...Effective silique number per plant(ESN), seeds per silique(SS), thousand seeds weight(TSW), silique length(SL) and silique density(SD) are important seed yield potential determinant traits in rapeseed(Brassica napus L.), which are controlled by quantitative trait loci(QTL). Mapping QTL to delimited chromosomal region offers an effective method for genetic dissection of these traits. A set of 96 double haploid(DH) lines were developed by crossing 2 Brassica napus lines R1 and R2, and an immortalized F_2(IF_2) population containing 124 combinations was developed by crossing those DH lines. DH populations were planted at 2 locations for 2 years and IF_2 populations were planted in 2 locations for 1 year. Based on the established 2,217.2 cM length high density genetic map, 42 QTLs were identified, with 26 QTLs detected repeatedly in different environments or populations, including 8 for SL, 7 for TSW, 4 for ESN, 4 for SS and 3 for SD. Among these identified QTLs, 3, 4, 1, 1 and 3 QTLs were considered as major QTLs for SL, TSW, ESN, SS and SD, respectively. In addition, 2 QTLs on A9 chromosome which control multiple traits were identified. These results warrant further study of fine mapping for yield and yield components.展开更多
[目的]筛选在安徽省庐江地区单季稻最适宜的毯状苗机插株距。[方法]采取工厂化培育毯状秧,株距按照插秧机固定参数设11、14、17 cm 3个处理水平,研究3种株距对水稻产量及其构成性状的影响。[结果]11 cm株距有效穗数显著大于另外2个处理...[目的]筛选在安徽省庐江地区单季稻最适宜的毯状苗机插株距。[方法]采取工厂化培育毯状秧,株距按照插秧机固定参数设11、14、17 cm 3个处理水平,研究3种株距对水稻产量及其构成性状的影响。[结果]11 cm株距有效穗数显著大于另外2个处理,理论产量也最高;在穗粒结构上,17 cm株距穗总粒数最高。[结论]11 cm株距能营造较为合理的基本苗数、发育进程和合理的穗粒构成,适宜在庐江地区作机插一季稻株距配置。展开更多
文摘本研究通过综合评价蚕豆品系产量性状在不同试点的丰产性、适应性和稳定性,筛选适应不同生态环境的产量性状稳定的优良品种(系)。同时评价各试点的区分力和代表性,为试点选择提供依据。2017年和2018年在甘肃和政县、康乐县、积石山县、渭源县、临夏县和漳县6个试点分别种植5个蚕豆品系0215-1-4(L1)、0208-3-1(L2)、0208-3-2(L3)、0323-2-1(L4)、0161-1(L5)与1个对照品种和政尕蚕豆(L6),收获时记录株高、株粒数、小区产量、株荚数、分枝数、百粒重。采用联合方差和GGE(genotype+genotypes and environment interactions,GGE)双标图对产量性状进行基因型和基因型与环境互作分析。联合方差分析表明,6个农艺性状的基因型除小区产量和株高基因型与环境互作效应无显著差异外,其余性状的基因型与×环境互作效应均达到极显著水平(P<0.01);除株高和株粒数基因型×年份互作效应达到极显著水平外(P<0.01),其余农艺性状×年份互作效应无显著差异。相关性分析表明,小区产量与株荚数和株粒数正相关,与株荚数显著正相关(P<0.05),与百粒重负相关。GGE分析结果表明,品种(系)的适应性、丰产性和稳定性以及试点的区分力和代表性均具有较高的GGE变异值,变幅在78.54%~97.38%之间。蚕豆品系L3在康乐县、积石山县、渭源县和临夏县试点的产量适应性均较高,在和政县试点2018年产量适应性最高;丰产性高的品种(系)依次为L3>L2>L6>L4,稳定性最高的品种(系)依次为L4>L1>L5>L3。试点的区分力依次为康乐县2017年、积石山县2017年和2018年,试点的代表性依次为渭源县2017年、康乐县2018年、积石山县2018年。高产且稳定的品系是L3和L4,结合试点的区分力和代表性,最理想的生态区试点是积石山县。本研究利用GGE双标图对甘肃蚕豆参试品种进行产量组分性状分析,为蚕豆品种综合评价提供参考。
基金supported by the National Key Research and Development Program of China(No.2016YFD0101300)the Science and Technology Innovation Project of Chinese Academy of Agricultural Sciences(Group No.118)+1 种基金the Earmarked Fund for China Agriculture Research System(CARS-12)Hubei Agricultural Science and Technology Innovation Center(201620000001048)
文摘Effective silique number per plant(ESN), seeds per silique(SS), thousand seeds weight(TSW), silique length(SL) and silique density(SD) are important seed yield potential determinant traits in rapeseed(Brassica napus L.), which are controlled by quantitative trait loci(QTL). Mapping QTL to delimited chromosomal region offers an effective method for genetic dissection of these traits. A set of 96 double haploid(DH) lines were developed by crossing 2 Brassica napus lines R1 and R2, and an immortalized F_2(IF_2) population containing 124 combinations was developed by crossing those DH lines. DH populations were planted at 2 locations for 2 years and IF_2 populations were planted in 2 locations for 1 year. Based on the established 2,217.2 cM length high density genetic map, 42 QTLs were identified, with 26 QTLs detected repeatedly in different environments or populations, including 8 for SL, 7 for TSW, 4 for ESN, 4 for SS and 3 for SD. Among these identified QTLs, 3, 4, 1, 1 and 3 QTLs were considered as major QTLs for SL, TSW, ESN, SS and SD, respectively. In addition, 2 QTLs on A9 chromosome which control multiple traits were identified. These results warrant further study of fine mapping for yield and yield components.
