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中国农学通报

中国农学通报 ›› 2022, Vol. 38 ›› Issue (7): 29-34.doi: 10.11924/j.issn.1000-6850.casb2021-0442

所属专题： 生物技术； 园艺

• 林学·园艺·园林 • 上一篇    下一篇

基于农艺性状解析乐都长辣椒种质分化情况

沈吉成1,2(), 赵彩霞1,2,3, 叶发慧1,2,3, 李亚鑫4, 刘德梅1,2, 刘瑞娟1,2, 沈裕虎1,2, 张怀刚1,2,3, 陈文杰1,2()   

  1. 1中国科学院高原生物适应与进化重点实验室/中国科学院西北高原生物研究所/中国科学院种子创新研究院,西宁 810008
    2青海省作物分子育种重点实验室,西宁 810008
    3中国科学院大学,北京 100049
    4青海大学,西宁 810016
  • 收稿日期:2021-04-25 修回日期:2021-09-29 出版日期:2022-03-05 发布日期:2022-04-13
  • 通讯作者: 陈文杰
  • 作者简介:沈吉成,男,1989年出生,甘肃武威人,助理工程师,硕士,研究方向：植物遗传育种研究。通信地址：810008 青海省西宁市中国科学院西北高原生物研究所,E-mail： 1911561480@qq.com。
  • 基金资助:
    第二次青藏高原综合科学考察研究项目“农田生态系统与粮食安全”(2019QZKK0303);青海省创新平台建设项目“青海省作物分子育种重点实验室”(2021-ZJ-Y05);中国科学院青年创新促进会项目(2019420)

Analysis of Germplasm Differentiation of Ledu Long Pepper Based on Agronomic Traits

SHEN Jicheng1,2(), ZHAO Caixia1,2,3, YE Fahui1,2,3, LI Yaxin4, LIU Demei1,2, LIU Ruijuan1,2, SHEN Yuhu1,2, ZHANG Huaigang1,2,3, CHEN Wenjie1,2()   

  1. 1Key Laboratory of Adaptation and Evolution of Plateau Biota/ Northwest Institute of Plateau Biology/Innovation Academy for Seed Design, Chinese Academy of Sciences, Xining 810008
    2Qinghai Provincial Key Laboratory of Crop Molecular Breeding, Xining 810008
    3University of Chinese Academy of Sciences, Beijing 100049
    4Qinghai University, Xining 810016
  • Received:2021-04-25 Revised:2021-09-29 Online:2022-03-05 Published:2022-04-13
  • Contact: CHEN Wenjie

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摘要：

为更好地提出保护和开发青海地方蔬菜种质资源乐都长辣椒策略,通过在同样栽培条件下比较分析来自青海不同产区的4个乐都长辣椒品系(LD1、LD2、LD3、LD4)的农艺性状,解析该资源当前的种质分化情况并就此探讨下一步对其保护和利用的对策。结果表明：（1）纯种乐都长辣椒LD1相对于其他3个品系具有良好的综合农艺性状,LD1的农艺性状综合评价最高为0.55,LD2次之为0.54,LD3最低为0.34。（2）供试的乐都长辣椒4个品系间已存在显著的农艺性状变异,种质分化明显,急需提纯复壮和创新改良。它们的单株产量和单果重的变异系数较大,分别为19.61%和19.70%,果肉厚度次之为16.56%,果实纵径变异系数最小为3.08%。（3）乐都长辣椒的产量与单株果数、果肉厚度和单果重呈极显著正相关,辣椒单果重与果肉厚度、商品果横径呈极显著正相关。可优先考虑在增加单株果数、果实横径及果肉厚度等方面着力,以提纯复壮和创新改良乐都长辣椒种质。

关键词: 乐都长辣椒, 农艺性状, 变异系数, 种质分化, 综合评价

Abstract:

To protect and develop Qinghai Ledu long pepper, a local vegetable germplasm resource, this study determined the differentiation of four Ledu long pepper strains (LD1, LD2, LD3 and LD4) by comparing the agronomic traits, and explored the steps to protect and utilize the resource. The main findings are summarized as follows: (1) by comprehensive evaluation, the agronomic traits of LD1 are the highest to 0.55, followed by LD2 of 0.54, LD3 of 0.34 is the lowest; (2) the agronomic traits’ variations among the four Ledu long pepper strains are significant, and the germplasm differentiation is obvious, which needs purification, regeneration and innovation urgently; the variation coefficient of the yield per plant and the weight per fruit of different strains of pepper are relatively high, which is 19.61% and 19.70%, respectively, followed by that of the pulp thickness, which is 16.56%, and the fruit longitudinal diameter variation coefficient is the smallest, which is 3.08%; (3) the pepper yield is extremely significantly and positively correlated with the number of fruits per plant, pulp thickness and per fruit weight. The pepper per fruit weight is significantly and positively correlated with the pulp thickness and the transverse diameter of commercial fruits. Therefore, increasing the number of fruits per plant, the fruit transverse diameter and pulp thickness should be considered to improve the germplasm of Ledu long pepper by purification and innovation.

Key words: Ledu long pepper, agronomic traits, coefficient of variation, germplasm differentiation, comprehensive evaluation

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