温度对紫色辣椒新品系YN 99007萌发及某些生理指标的影响   总被引：9，自引：1，他引：9  

隋益虎  张子学  邢素芝  陆晓民  郭正明 《种子》2005,24(1):19-20,23

用6种温度(40、35、30、25、20、15℃)处理紫色辣椒新品系YN 99007进行发芽试验(以日本天鹰椒作为对照),研究各温度下的发芽率、发芽势、发芽指数、芽长、脯氨酸(Pro)含量、丙二醛(MDA)含量及质膜透性(PMP)等指标.结果表明:紫色辣椒YN 99007的发芽适宜温度范围为20～35℃,40℃和15℃下发芽优于对照品种;抗逆温生理特性亦优于对照品种.  相似文献   

辣椒新品种川腾2号的选育     

滕有德  李跃建  宋占锋 《辣椒杂志》2006,4(3):9-11,16

川腾2号辣椒是以自交系03-8-4-2作母本,以自交系03-9-4-6作父本配制而成的一代杂种。该品种极早熟;果实粗牛角形,纵径12.2cm,横径4.5cm,果肉厚0.4cm,单果质量53.2g;青熟果深绿色,老熟果红色,外观商品性好;肉质脆嫩,微辣,适鲜食。露地667m2产鲜椒3000kg左右。耐寒、耐热、耐旱、耐涝,抗病毒病、疫病、炭疽病、蚜虫、跗线螨、烟青虫等的能力超过湘研1号,与湘研11号相当,为强或较强,适合四川和全国种植。  相似文献   

辣椒新品种干鲜1号的选育   总被引：1，自引：0，他引：1  

杨朝进  陈炳金  刘建国  李三 《辣椒杂志》2006,4(2):19-21

干鲜1号是以自交系A20-4-3为母本,与父本A75配制的早中熟羊角形一代杂种。果实纵经18～20cm,横经1.8～2cm,果肉厚0.2cm,平均单果质量25g;果面光滑顺直,青熟果深绿色,老熟果鲜红色。味中辣,商品性好。露地667m2产鲜椒3200～4000kg。抗病毒病、疫病。适宜华东南、长江流域早春露地和保护地栽培。  相似文献   

Proposed revision of nomenclature for potyvirusresistance genes in Capsicum     

M.M. Kyle  A. Palloix 《Euphytica》1997,97(2):183-188

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Initial screening of chili and sweet pepper germplasm for resistance to chili thrips, Scirtothrips dorsalis Hood     

N. K. Krishna Kumar  M. Aradya  A. A. Deshpande  N. Anand  P. R. Ramachandar 《Euphytica》1996,89(3):319-324

Summary A preliminary evaluation for resistance to chili thrips, Scirtothrips dorsalis Hood of 41 and 194 pepper (Capsicum annuum L.) germplasms during 1987 and 1988, respectively, indicated chili accessions may be a promising source of resistance. In contrast, all sweet pepper accessions tested were highly susceptible. A number of chili accessions produced a moderate yield, in spite of a high thrips infestation indicating tolerance to S. dorsalis. Rating for thrips damage was more reliable and efficient than estimating thrips numbers in screening pepper accessions for resistance to thrips. Highly significant, positive correlation between ratings at the seedling stage and final rating for thrips damage indicated the feasibility of screening pepper accessions at the seedling stage. Comparing the similarities in rating among accessions resulted in 40 distinct groups. The variance-covariance matrix of the data from these 40 groups was subjected to principal component analysis. This accounted for 56 and 18 per cent of the variation across the two principal axes, respectively. Projection of chili and sweet pepper accessions along these two axes revealed three distinct clusters. About 80 per cent of chili accessions formed the first cluster, 58 per cent of the sweet pepper accessions formed the second cluster and a third cluster exhibited intermediate ratings for thrips damage. The significance of these findings in relation to geographical divergence and resistance to thrips among pepper accessions is discussed.  相似文献   

气候变暖对宜阳县朝天椒种植的影响研究     

夏婵 《现代农业科技》2012,(10):302-304

通过对朝天椒大田生产的气候、生态环境特征的分析,选取气温、降水、日照和相对湿度这4个对朝天椒生产影响最大的气象因子,分析各因子的变化特点。结果表明:气候变暖和日照增加有利于朝天椒的种植发展,但降雨量减少会影响朝天椒的生产。据此提出相关对策,如温棚育苗、提早播种、加强田间管理、做好人工增雨和蓄水准备,以应对气候变暖的影响。  相似文献   

不同砧木嫁接对辣椒生长及生理的影响     

曹云娥  李建设  罗爱华  季莉 《北方园艺》2012,(12):42-44

利用不同砧木嫁接辣椒,研究不同砧木嫁接对辣椒的生长、生理及产量的影响,为促进嫁接辣椒在生产中大面积推广提供理论依据。结果表明:不同砧木嫁接辣椒在根系体积和增产效果上表现一致,均为砧木"新峰四号""塔基"自根苗"威壮贝尔",说明采用合适的砧木嫁接可促进辣椒的地下部生长,从而增加产量;嫁接并不会明显影响辣椒的品质。  相似文献   

辣椒CaCOI1 基因的克隆、表达及其序列分析     

胡廷章  陈再刚  杨俊年  吴晓丽  黄小云 《园艺学报》2012,39(4):713-720

 利用RT-PCR技术从辣椒中克隆到基因CaCOI1,该基因编码的蛋白质由603个氨基酸残基组成,蛋白质的分子量为68.35 kD,等电点是6.32。在蛋白质N–端有1个F-box结构域,C–端有6个富含亮氨酸结构域。二级结构分析表明,CaCOI1蛋白分子中,α–螺旋、β–折叠、β–转角和不规则卷曲分别为51.41%、13.76%、5.80%和29.03%。CaCOI1蛋白的平均亲水系数为–0.143,为亲水蛋白。蛋白质序列比对和进化树分析表明,CaCOI1与番茄LeCOI1蛋白的一致性最高（94%）,进化距离最近。实时定量RT-PCR分析表明,CaCOI1在辣椒的根、茎、幼叶、成熟叶、花、青熟期果实、成熟红果等不同生长发育时期的组织中都能表达,在花中表达水平最高,是其他组织的2.8 ~ 5.4倍,表明CaCOI1在花的发育过程中起重要作用。  相似文献   

Commercial agriculture as creative destruction or destructive creation: a case study of chili cultivation and plant‐pest disease in the southern Yucatán region     

E. Keys 《Land Degradation \u0026amp; Development》2004,15(4):397-409

Agricultural change encompasses both social and ecological alterations, some negative, some positive. Studies of land change and land degradation treat plant pest and diseases triggered by agricultural change in an inconsistent fashion. A study of the southern Yucatán region of Mexico reveals that the shift to commercial chili cultivation yields both positive and negative consequences, akin to the concepts of creative destruction and destructive creation. The negative consequences are dramatically amplified by persistent plant pest and diseases apparently triggered by the means of cultivation and by the inclusion of the region into a national marketing structure. Thus, while providing economic benefits to some of the farmers of the region the short‐ and long‐term impacts of chili cultivation on farmer households is mixed. Studies of agricultural land‐use change and household economics will benefit by incorporating plant pests and diseases as one of the suite of factors involved in land degradation. Copyright © 2004 John Wiley & Sons, Ltd.  相似文献   

辣椒新品种川辣2号的选育     

滕有德 《辣椒杂志》2005,3(1):12-14

川辣2号是以自交系28-6-2-1为母本,以自交系10-10-3-1作父本配制而成的一代杂种。该杂种早熟;果实长羊角形,果长15．3cm,粗1．7cm,单果重11g,青熟果深绿色,老熟果鲜红色,商品性好;辣味中等;抗病毒病、炭疽病、疫病等病害;667m^2产鲜椒2000kg左右。适合四川和全国线辣椒各主产区以及其他辣椒产区种植。  相似文献