排序方式: 共有48条查询结果,搜索用时 15 毫秒
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中椒115 号是以自交系78090-3-1 为母本,以0516-Tsw为父本配制而成的甜椒一代杂种。中早熟,始花节位为第9~10
节,定植后35 d(天)开始采收青熟果。果实灯笼形,果色浅绿,果面光滑,3 或4 心室,纵径10 cm,横径7 cm,典型果
单果质量130~150 g。抗逆性强,抗番茄斑点萎蔫病毒病,中抗黄瓜花叶病毒病和疫病。丰产、稳产,中后期仍能保持较高
的结果率和较好的商品性,产量3 000 kg·(667 m 2) -1 左右。适于南菜北运基地露地早熟栽培,也可作保护地栽培。 相似文献
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CAO Ya-cong ZHANG Zheng-hai WANG Li-hao SUI Xiao-lei ZHANG Zhen-xian ZHANG Bao-xi 《中国农业科学(英文版)》2016,(4):775-784
Fruit set and development are affected by many phytohormones,including gibberellin.Little is known regarding molecular mechanism underlying gibberellin mediated fruit set and development especially in Capsicum.Three gibberellin receptors,CaGID1b.1,CaGID1b.2 and CaGID1c,and a DELLA protein,CaGAl,have been identified in Capsicum annuum L.During the fruit development,the expression level of CaGIDIc was low,and the expression fold change is mild.However,CaGID1b.1 and CaGID1b.2 were relatively higher and more acute,which indicates that CaGID1b.1 and CaGID1b.2 may play an important role in fruit pericarp,placenta and seed.Ectopic expressions of CaGID1b.1,CaGID1b.2 and CaGID1c in Arabidopsis double mutant gid1a gid1c increased plant height,among which CaGID1b.2 had the most significant effect;CaGAl reduced plant height in double mutant rga-24/gai-t6,having a similar function to AtGID1 and AtGA1 in stem elongation.Yeast two-hybrid(Y2H)and bimoiecuiar fluorescence complementation(BiFC)assays indicated that CaGID1b.1and CaGID1b.2 interact with CaGAl in a GA-dependent manner,while CaGID1c interacts with CaGAl in a GA-independent manner.Our study reveals the key elements during gibberellin signaling in Capsicum and supports the critical importance of gibberellin for Capsicum fruit set and development. 相似文献
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辣椒不同外植体处理方法对组织培养再生的影响 总被引:2,自引:0,他引:2
选取3个甜椒(0510、0516、77013)和2个辣椒(0818、0819)自交系,利用幼苗下胚轴切段、幼苗直接切去生长点且带根的下胚轴、幼苗针刺后斩首的带根下胚轴、带有子叶、胚芽和部分下胚轴的半粒种子以及带有胚根和部分下胚轴的半粒种子为外植体,在添加或不添加植物生长物质的MS培养基上进行辣椒外植体的组织培养再生。添加植物生长物质的培养基中并没有诱导形成再生芽,在不添加植物生长物质的培养基中部分处理方法得到了再生植株,其中,幼苗未露出子叶时斩首的带根下胚轴和幼苗弯钩状态时斩首的带根下胚轴平均再生率均为0.33%,幼苗下胚轴刚伸直时针刺后斩首的带根下胚轴平均再生率为2.43%,幼苗弯钩状态时针刺后斩首的带根下胚轴平均再生率为12.08%,带有胚根和部分下胚轴的半粒种子平均再生率为17.33%。当以带胚根和部分下胚轴的半粒种子作为外植体,以不添加植物生长物质的MS培养基进行再生培养时,2个辣椒类型材料的再生率较高,0818为46.67%,0819为33.33%,而且再生芽能正常伸长。 相似文献
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为明确我国辣椒病毒病的种类和发展趋势,2018 年和2019 年在我国16 个省(市、自治区)辣椒主产区采集具有病毒病疑似症状的样品105 份,利用双抗体夹心酶联免疫吸附反应(DAS-ELISA)对12 种辣椒主要病毒进行检测。结果表明,有70 份样品为病毒病感染样品,病毒检出率为66.67%。检出病毒种类共10 种,其中辣椒轻斑驳病毒(Pepper mild mottle virus,PMMoV)检出率最高,为24.76%,其次为黄瓜花叶病毒(Cucumber mosaic virus,CMV)、蚕豆萎蔫病毒(Broad bean wilt virus,BBWV)、烟草蚀纹病毒(Tobacco etch virus,TEV)和番茄斑萎病毒(Tomato spotted wilt virus,TSWV),检出率分别为19.05%、12.38%、12.38% 和10.48%。我国辣椒主产区多种病毒复合侵染发生较为普遍,病毒复合侵染率为40%,其中以2 种病毒复合侵染比例最高,为28.57%。通过对两年辣椒病毒病检测结果进行比较,12 种病毒中有7 种检出率有上升趋势。总体而言,PMMoV 和CMV 为近两年危害我国辣椒生产较为严重的病毒病;此外,PMMoV、BBWV-1,2、TEV、TSWV 具有流行风险,需要严加防范。 相似文献
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弱光条件下辣椒幼苗叶片的气体交换和叶绿素荧光特性 总被引:15,自引:2,他引:13
在人工气候室内, 研究了人工模拟弱光处理(75~100μmol·m-2 ·s-1 , 对照光强450~500μmol·m-2 ·s-1 ) 对不同基因型辣椒(Capsicum annuum L. ) 叶片光合作用气体交换、叶绿素荧光参数以及叶绿素含量的影响。结果表明, 弱光逆境下生长的辣椒幼苗净光合速率( Pn) 、暗呼吸速率(Rd) 、夜间呼吸速率(Rn) 不同程度下降, PSⅡ实际光化学效率( ФPSⅡ) 、光合电子传递速率( ETR) 和光化学猝灭系数( qP) 降低, 激发能向光化学反应分配的比例减少, 热耗散增加, 而弱光对PSⅡ的最大光化学效率( Fv/Fm) 无显著影响。辣椒叶片ФPSⅡ及ETR对光强( PPFD) 的响应曲线表明, ФPSⅡ随PPFD的升高而下降, 弱光下生长的叶片下降幅度较对照正常光照下的叶片大; 弱光下生长叶片的的电子传递速率的光饱和点低于正常光照下的叶片, 相应的饱和电子传递速率也较低。弱光处理使辣椒功能叶片SPAD值降低, 叶绿素合成受到抑制。弱光耐受性较好的材料, 如‘伏地尖’和‘上海圆椒’在弱光下Pn下降较少,并且有着相对较高的Fv/Fm以及ETR值。 相似文献
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Analysis of SSRs Information in Capsicum spp.from EST Database 总被引:1,自引:0,他引:1
HUANG Huan-huan ZHANG Zhong-hua ZHANG Zheng-hai MAO Sheng-li WANG Li-hao ZHANG Bao-xi 《中国农业科学(英文版)》2011,10(10):1532-1536
SSR markers are useful in pepper linkage mapping and gene location.446 SSR markers have been reported,but they are insufficient.It is costly to develop SSR markers from DNA library,whereas it seems much easy to find in EST sequences in the GenBank of pepper through internet.In this study,attempts have been made to develop SSR markers in the EST sequences by using bioinformatics.EST sequences were trimmed by ‘est-trimmer.pl' software,while 116 915 EST sequences were obtained without poly ‘A' or poly ‘T',ranged between 100 and 700 bp.Using ‘e-PCR' and ‘del.pl' softwares,SSR sequences were identified.2 508 microsatellite loci (larger than 20 repeats) were established and 755 SSR primers were designed using SSR finder software and Primer 3 software.There were 498 (0.43%) mono-,1 026 (0.89%) di-,5 1 8 (0.45%) tri-,245 (0.21%) tetra-,114 (0.10%) penta-,and 107 (0.09%) hexa-nucleotide SSRs.The estimated frequency of SSRs was approximately 1/25.12 kb.According to the distribution of SSRs in pepper,the mean length of pepper SSRs was 22.68 bp and the adenine rich repeats such as A/T,AG,AT,AAG,AAAT,and AAAC were predominant in each type of SSRs (mono-,di-,tri-,tetra-,penta-,and hexa-),whereas the C/G,CG,CCG repeats were less abundant.210 primers were tested in 8 pepper cultivars and the PCR result revealed the existence of polymorphism among 127 (60.48%) SSR primers within 8 pepper cultivars.It is confirmed that pepper EST database could be efficiently exploited for availability of SSR markers. 相似文献