| 郑巨云,王俊铎,龚照龙,梁亚军,张泽良,艾先涛,郭江平,莫明,李雪源.棉花品种资源花铃期抗旱性鉴定与评价[J].干旱地区农业研究,2021,39(2):150~163 |
| 棉花品种资源花铃期抗旱性鉴定与评价 |
| Identification and comprehensive assessment of drought resistance of upland cotton variety resources during flower and boll stage |
| |
| DOI：10.7606/j.issn.1000-7601.2021.02.20 |
| 中文关键词: 棉花 品种资源 抗旱性 花铃期 鉴定 评价 |
| 英文关键词:upland cotton variety resource drought resistance bud stage indfentification comprehensive assessment |
| 基金项目:国家自然科学基金地区基金项目（31760405 ）；天山青年计划项目（2017Q050）；国家转基因耐旱耐盐碱棉花新品种培育项目（2017ZX08005004-009）；NSFC-新疆联合基金重点支持项目（U1903204） |
|
| 摘要点击次数: 725 |
| 全文下载次数: 202 |
| 中文摘要: |
| 以272份国内外棉花品种资源为试验材料，设置干旱胁迫与正常灌水2个处理，于花铃期测定不同处理各品种资源的株高、果枝数、有效结铃数等15个农艺性状及叶绿素含量（Chl）、丙二醛含量（MDA）、脯氨酸含量（PRO）等4个生理指标，以抗旱指数（DI）为基本评价指标，利用综合抗旱指数（CDI）、抗旱综合度量值（D）、加权抗旱指数（WDI）3种评价方法，结合灰色关联度及聚类分析，对272份品种资源进行抗旱性综合评价。根据D值聚类分析结果，将272份品种资源划分为5级：强抗旱级别包含关农1号、渝棉1号、辽棉9号、辽棉16号共4份品种资源；抗旱级别包含银棉2、岱字棉16、新陆中10等24份品种资源；耐旱级别包括18N3、司6524、新陆中82等134份品种资源；较敏旱级别包括鄂抗棉8、新陆中65、新陆中22等100份品种资源；敏旱级别包括150030、鄂抗棉10、晋棉12等10份品种资源。CDI值、D值、WDI值存在极显著正相关（相关系数0.958以上），评价结果基本一致，以D值为主，结合CDI、WDI值可有效、准确评价棉花花铃期抗旱特性。筛选的关农1号、渝棉1号、辽棉9号等抗旱品种资源可为棉花抗旱遗传改良提供特异资源。整齐度、比强度、叶绿素含量、果节数、结铃数、单铃重可以作为花铃期抗旱性鉴定的主要指标。 |
| 英文摘要: |
| This paper determined the 19 agronomic traits of upland cotton under field drought stress including plant height (PH), the height of the first node of fruit branch (HFNFB), the first node of fruit branch (FNFB), leaf area (LA), fruit branch (FB), fruit nodes (FN), boll number (BN), boll weight (BW), seed cotton yield per plant (SYP), lint percentage (LP), fiber length (FL), fiber strength (FS), micronaire (MIC), uniformity (UNI), elongation (EL), chlorophyll content (Chl), malonaldehyde (MDA), proline (PRO), and superoxide dismutase (SOD) by using 272 domestic and foreign upland cotton variety resources during flower and boll stages. Then, the drought resistance of upland cotton was evaluated by comprehensive drought resistant index (CDI), drought resistance comprehensive evaluation values (D), weighted drought resistant index (WDI) and clustering analysis. The result showed that there was significant positive correlation between comprehensive drought resistant index (CDI), weighted drought resistant index (WDI), and drought resistance comprehensive evaluation values (D). According to the D-value cluster analysis results, 272 varieties were divided into five grades: the strong drought-resistance grade included four varieties of Guannong 1, Yumian 1, Liaomian 9, and Liaomian 16; the drought-resistance grade included 24 varieties, such as Yinmian 2, Daizimian 16, and Xinluzhong 10, etc.; the drought-tolerance grade included 134 varieties, such as 18N3, Si6524, and Xinluzhong No. 82, etc; the slight drought-sensitive grade included 100 varieties, such as Ekangmian 8, Xinluzhong 65, Xinluzhong 22, etc. ; the drought-sensitive grade included 10 varieties, such as 150030, Ekangmian 10, Jin cotton 12 , etc. CDI value, D value and WDI value had extremely significant positive correlation (correlation coefficient was above 0.958), and the evaluation results were basically the same. D value was the main factor, and the combination of CDI value and WDI value could effectively and accurately evaluate the drought resistance characteristics of cotton at flowering and boll stage. The selected drought-resistant cultivar resources such as Guannong No.1, Yumian No.1, and Liaomian No.9 could provide specific resources for genetic improvement of drought-resistant cotton. UNI, FS, Chl, FN, BN, and BW could be used as important identification indexes for drought resistance of upland cotton variety resources during flower and boll stages. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| | |