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利用辣味辣椒Perennial(Capsicum annuum)和无辣味辣椒83-58种内重组自交系群体构建的辣椒种内遗传图谱,以温室和露地栽培条件下无辣味辣椒77013A与重组自交系群体各株系杂交F1果实的辣椒素和二氢辣椒素含量作为表型性状进行分析。结果表明,温室和露地栽培条件下辣椒素和二氢辣椒素的含量和比值差异明显。对露地和温室栽培条件下辣椒果实辣椒素和二氢辣椒素含量、总和及其比值进行了QTL定位,共获得16个关于辣椒素和二氢辣椒素含量的QTL位点,分布在辣椒第2、4、12号染色体上,2号染色体上同时控制辣椒素、二氢辣椒素、二者比值和辣椒素总量的主效QTL位点cap2.1、dhp2.1、C/D2.1和(C+D)2.1,均在露地和温室被检测到,其LOD值大于5.0,贡献率为20.2%~76.6%,侧翼标记均为BD76366和Pun1,12号染色体上调控辣椒素总量的微效QTL也在温室和露地同时被检测到,其他QTL位点未在两种环境下同时定位到。 相似文献
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辣椒抗黄瓜花叶病毒QTL分析 总被引:3,自引:0,他引:3
利用辣椒抗黄瓜花叶病毒材料perennial与园艺性状优良的感病材料茄门,及其F2群体146个单株、F3 146个株系为试材,采用SRAP和SSR分子标记技术,利用JoinMap 3.0软件构建了包含76个标记、13个连锁群,覆盖长度为830.4 cM的辣椒分子遗传图谱。对F3株系(4 380个单株)进行人工接种鉴定黄瓜花叶病毒,其病情指数呈正态分布。结合分子遗传图谱的结果,利用MapQTL 4.0软件进行分析,将抗病基因的QTL定位在第1、4、7连锁群上,抗性贡献率分别为12.7%、38.8%、11.0%。 相似文献
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不同黄瓜基因型子叶再生体系的建立 总被引:1,自引:0,他引:1
以6个不同黄瓜品种和自交系为试材,研究了基因型、激素(6-BA、ABA)对黄瓜离体子叶再生的影响。结果表明:不同基因型黄瓜之间的再生频率差异较大,吉林旱瓜为最佳基因型,在培养基M7(MS+1.5mg/L6-BA+0.5mg/LABA+2mg/LAgNO3)上再生频率最高达97%,平均每外植体再生芽数为5.2;与对照相比,6-BA、ABA和AgNO3组合能促进芽的再生,显著提高再生芽数,其中6-BA是黄瓜子叶再生的必要激素,而ABA是促进子叶高效再生的激素;此外,MS培养基添加0.1mg/L6-BA能显著促进再生不定芽的伸长。 相似文献
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基本农田信息系统的建立及其应用──Ⅰ.耕地地力等级体系研究 总被引:34,自引:0,他引:34
本文以高邮市为评价区,建立了GIS支持下的基本农田信息系统峄拥有的资料进行系统的诉管理;应用相样分析、因子分析,模糊评价,层次分析等数学分析原理,选择评价要素,构造层次结构、建立单因素评价以及计算单因素的权重,建立了一种定性与定量相结合的耕地地力等级评价的方法。评价结果表明:利用计算机技术可以完全依据耕地自然要素评价地力,由此获得的评价结果既克服了凭经验确定分级指数主观方法的弊端,又避免了纯数学方 相似文献
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WANG Li-hao ZHANG Bao-xi AM Daubeze HUANG San-wen GUO Jia-zhen MAO Sheng-li A Palloix DU Yong-chen 《中国农业科学(英文版)》2006,5(3):188-195
Pepper hybrid seeds production using male sterility could lower cost by reducing time and labour, and increase the genetic purity of the F1 seeds. To investigate the genetics of fertility restoration of the Peterson cytoplasmic sterility in pepper, a doubled haploid population of 115 pepper lines obtained from anther culture of the F1 hybrid between Yolo Wonder (sterility maintainer line) and Perennial (fertility restorer line) and the parental lines were test-crossed by 77013A (a strict cytoplasmic-genic male sterile line). The fertility of the test-crossed lines was assessed in greenhouse and open field with the following three criteria: pollen index (PI, visual estimation of pollen amount per flower), pollen number (PN, pollen counting under microscope), and seed number (SN, the number of seeds per fruit in open pollination). Correlations between the each couple of criteria within, as well as between the cultivation methods ranged from 0.55 to 0.84. Analysis of variance showed that the genotype (DH line) and environment were the significant sources of variation of the fertility. Narrow sense of heritance of fertility restoration ranged from 0.38 to 0.92, depending on the criteria and environment. The distribution of the progeny was continuous between the parental genotypes indicating the quantitative inheritance of fertility restoration. Inferred from segregation according to Snape et al.(1984), the number of segregating genes was estimated to be that three to four genetic factors were involved in pollen traits (PI and PN) and five to eight genetic factors in seed production (SN). The heredity analysis of the CMS will be helpful for understanding of the genetic mechanism of the fertility restoration and the exploitation of the CMS in hybrid seed production. 相似文献