A population of 152 recombinant inbred lines (RIIs) derived from a cross between CT9993, a japonica rice with hard consistency (GC) and Khoa Dawk Mali105 (KDML 105 ), a famous Thai rice(Oryza sativa L. ) with medium G...A population of 152 recombinant inbred lines (RIIs) derived from a cross between CT9993, a japonica rice with hard consistency (GC) and Khoa Dawk Mali105 (KDML 105 ), a famous Thai rice(Oryza sativa L. ) with medium GC, was used for GC quantitative trait loci (QTLs) analysis. Three linkage maps were constructed with RFLP, AFLP and microsatellite (SSLP) markers. The first one consists of 83 RFLP markers with 17.53 cM of an average distance between markers. The second one consists of 83 RFLP and 69 AFLP markers with 13.22 cM average distance between markers and the third one consists of 83 RFLP, 69 AFLP and 15 SSLP markers, and has an average distance of 12.98 cM between markers. Based on these three maps, QTLs conferring GC were analyzed. The results show that GC is mainly controlled by two linked loci,which are located at the two flanks of RFLP marker R2170 on chromosome 3. The distance between the two linked QTLs is 25 cM and the two QTLs were determined by a LOD scores larger than 16.0. The number of minor QTIs controlling GC varies from 4- 9 in the three different linkage maps.展开更多
为探讨森林生态系统中苔藓枯落物的生态属性与其下层土壤水热之间的关系,采用样地调查法及特征描述统计、相关系数等分析法,对祁连山大野口流域49块样地的青海云杉林苔藓枯落物及其土壤水热特征进行分析.结果表明：苔藓枯落物平均厚度（...为探讨森林生态系统中苔藓枯落物的生态属性与其下层土壤水热之间的关系,采用样地调查法及特征描述统计、相关系数等分析法,对祁连山大野口流域49块样地的青海云杉林苔藓枯落物及其土壤水热特征进行分析.结果表明：苔藓枯落物平均厚度（6.0±0.3）cm,平均含水率为（101.9±6.3）%；0~10、10~20、20~40、40~60、60~80 cm 土层深的土壤含水率平均值分别为（66.24±4.22）%、（57.62±3.23）%、（48.44±3.21）%、（42.81±6.48）%、25.89%,各土层温度平均值分别为（7.2±0.26）（5.2±0.27）（2.8±0.29）（2.0±0.61）（1.6±0.95）℃；苔藓枯落物厚度与海拔、坡向、坡度、胸径、树高、冠长、冠幅、郁闭度、土壤各层含水率和温度等因子均极弱相关,甚至认为不相关；苔藓枯落物含水率与海拔为中度正相关（P〈0.05）,与40~60 cm 深的土壤含水率存在显著正相关,与其温度成中度负相关.展开更多
文摘A population of 152 recombinant inbred lines (RIIs) derived from a cross between CT9993, a japonica rice with hard consistency (GC) and Khoa Dawk Mali105 (KDML 105 ), a famous Thai rice(Oryza sativa L. ) with medium GC, was used for GC quantitative trait loci (QTLs) analysis. Three linkage maps were constructed with RFLP, AFLP and microsatellite (SSLP) markers. The first one consists of 83 RFLP markers with 17.53 cM of an average distance between markers. The second one consists of 83 RFLP and 69 AFLP markers with 13.22 cM average distance between markers and the third one consists of 83 RFLP, 69 AFLP and 15 SSLP markers, and has an average distance of 12.98 cM between markers. Based on these three maps, QTLs conferring GC were analyzed. The results show that GC is mainly controlled by two linked loci,which are located at the two flanks of RFLP marker R2170 on chromosome 3. The distance between the two linked QTLs is 25 cM and the two QTLs were determined by a LOD scores larger than 16.0. The number of minor QTIs controlling GC varies from 4- 9 in the three different linkage maps.
文摘为探讨森林生态系统中苔藓枯落物的生态属性与其下层土壤水热之间的关系,采用样地调查法及特征描述统计、相关系数等分析法,对祁连山大野口流域49块样地的青海云杉林苔藓枯落物及其土壤水热特征进行分析.结果表明：苔藓枯落物平均厚度（6.0±0.3）cm,平均含水率为（101.9±6.3）%；0~10、10~20、20~40、40~60、60~80 cm 土层深的土壤含水率平均值分别为（66.24±4.22）%、（57.62±3.23）%、（48.44±3.21）%、（42.81±6.48）%、25.89%,各土层温度平均值分别为（7.2±0.26）（5.2±0.27）（2.8±0.29）（2.0±0.61）（1.6±0.95）℃；苔藓枯落物厚度与海拔、坡向、坡度、胸径、树高、冠长、冠幅、郁闭度、土壤各层含水率和温度等因子均极弱相关,甚至认为不相关；苔藓枯落物含水率与海拔为中度正相关（P〈0.05）,与40~60 cm 深的土壤含水率存在显著正相关,与其温度成中度负相关.
