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首页> 外文期刊>Australian Journal of Crop Science >Combining ability analysis of tuber yield and related traits and bacterial wilt (Ralstonia solanacearum ) resistance in potato
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Combining ability analysis of tuber yield and related traits and bacterial wilt (Ralstonia solanacearum ) resistance in potato

机译：马铃薯块茎产量及相关性状与细菌性枯萎（Ralstonia solanacearum）抗性的配合力分析

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In potatoes (Solanum tuberosum L. 2n=4x=48) both the general combining ability (GCA) effects of parents and specific combining ability (SCA) effects of crosses are important in conditioning traits of economic importance. The objective of this study was to determine the combining abilities for tuber yield, its components and bacterial wilt resistance on selected potato varieties and clones. Fourteen parents [eight male varieties that are commonly grown in Kenya and six female clones with moderate tolerance to bacterial wilt from the International Potato Center (CIP)] were crossed using the North Carolina II mating design. The resultant 48 families were evaluated for yield and yield components and bacterial wilt resistance in inoculated fields at Kenya Agricultural Research Institute, National Agricultural Research Laboratories (KARI-NARL) and at a farmer’s field at Kinale using a 6 × 8 alpha lattice experimental design with three replications. Generally, crosses tested at Kinale took a longer time to start wilting, had lower values for the area under the disease progress curve (AUDPC), percentage of symptomatic tubers based on tuber numbers (PSTTN) and percentage of symptomatic tubers based on weight (PSTTW) than at KARI-NARL. Significant (P≤0.001) GCA effects were observed for males for total tuber weight (TTW) and days to maturity (DTM) while the GCA effects for females were significant (P≤ 0.001) for TTW and total tuber numbers ha-1(TTN)(P<0.01) at KARI-NARL.
机译：在马铃薯（Solanum tuberosum L. 2n = 4x = 48）中，父母的一般结合能力（GCA）效应和杂交的具体结合能力（SCA）效应对调节重要的经济性状均很重要。这项研究的目的是确定块茎产量，其组成和对所选马铃薯品种和克隆的抗青枯病的综合能力。使用北卡罗莱纳州II交配设计杂交了14个亲本（在肯尼亚普遍生长的8个雄性品种和来自国际马铃薯中心（CIP）的6个对青枯病具有中等耐受性的雌性克隆）。在肯尼亚农业研究所，国家农业研究实验室（KARI-NARL）和Kinale的一个农民田间，使用6×8 alpha晶格实验设计，评估了所得的48个科的产量和产量成分以及细菌的抗青枯病能力。三个重复。通常，在Kinale上测试的杂交品种开始枯萎需要更长的时间，疾病进展曲线下的面积（AUDPC），基于块茎数量的有症状块茎百分比（PSTTN）和基于体重的有症状块茎的百分比（PSTTW）较低。 ）比在KARI-NARL。男性在总块茎重量（TTW）和成熟天数（DTM）上观察到显着（P≤0.001）的GCA效应，而女性在TTW和总块茎数ha-1（TTN）上的GCA显着（P≤0.001）。 ）（P <0.01）。

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