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3个优质甜玉米品种幼苗及田间耐寒性分析

詹鹏麟 张扬 林建新 卢和顶 许静 庄炜 陈山虎 廖长见

詹鹏麟,张扬,林建新,等. 3个优质甜玉米品种幼苗及田间耐寒性分析 [J]. 福建农业学报,2024,39(3):1−9
引用本文: 詹鹏麟,张扬,林建新,等. 3个优质甜玉米品种幼苗及田间耐寒性分析 [J]. 福建农业学报,2024,39(3):1−9
ZHAN P L, ZHANG Y, LIN J X, et al. Cold Tolerance of Seedlings and Field Plants of Three Sweet Maize Cultivars [J]. Fujian Journal of Agricultural Sciences,2024,39(3):1−9
Citation: ZHAN P L, ZHANG Y, LIN J X, et al. Cold Tolerance of Seedlings and Field Plants of Three Sweet Maize Cultivars [J]. Fujian Journal of Agricultural Sciences,2024,39(3):1−9

3个优质甜玉米品种幼苗及田间耐寒性分析

基金项目: 福建省科技计划公益类专项(2021R1031006、2022R1031001);福建省种业创新与产业化工程项目( zycxny2021006);福建省农业科学院自由探索科技创新项目(ZYTS2023004)
详细信息
    作者简介:

    詹鹏麟(1991—),男,助理研究员,主要从事玉米遗传育种及生物技术研究,E-mail:874751264@qq.com

    通讯作者:

    廖长见(1979—),男,副研究员,主要从事玉米遗传育种及生物技术研究,E-mail:liaocj1978@163.com

  • 中图分类号: S513

Cold Tolerance of Seedlings and Field Plants of Three Sweet Maize Cultivars

  • 摘要:   目的  为提升甜玉米产值,生产上常需要促早和冬种栽培,但两种栽培模式会经历低温危害过程,因此鉴定耐寒性甜玉米品种在种植和推广具有重要应用价值。  方法  以闽甜6855及同生态应用品种萃甜618和广良27为供试材料,采用室内和大田低温表型鉴定,对幼苗耐寒性生理指标及大田果穗外观品质性状进行比较分析。  结果  (1)3个品种幼苗进行4 ℃处理24、48、72 h后,发现闽甜6855耐寒性最强,萃甜618次之,广良27最弱。(2)对不同时间处理下5个耐寒指标检测发现,闽甜6855中SOD、CAT和POD酶活含量分别为315.43、771.97、429.81 Ug.g−1,分别比萃甜618高13.9%、28.5%和109.1%及比广良27高34.3%、18.8%和86.4%;MDA含量在闽甜6855积累最低;而SP指标仅处理48 h时三者之间有差异。(3)耐寒指标相关性分析发现,SOD酶活性与处理时间和CAT酶活性有极显著相关性,与SP酶活性具有显著性相关。(4)冬季大田种植采后比较果穗特性表现出闽甜6855结实性最好,外观好,无缺粒现象;穗行数达15.6、出籽率71.68%,高于萃甜618和广良27,秃尖长最短。  结论  闽甜6855幼苗期在表型和生理上具有更明显的耐寒性,低温下果穗外观品质优势强,具有重要推广应用价值。
  • 图  1  低温处理不同时间下甜玉米幼苗表型比较

    (A)4℃处理0 h,(B)4℃处理24 h,(C)4℃处理48 h,(D)4℃处理72 h。

    Figure  1.  Phenotypic appearances of sweet maize seedlings grown at 4 ℃ for varied durations

    (A) treated at 4℃ for 0 h, (B) treated at 4 ℃ for 24 h, (C) treated at 4 ℃ for 48 h, (D) treated at 4 ℃ for 72 h.

    图  2  低温处理下甜玉米幼苗SOD酶活性比较

    不同的小写字母表示具有显著性差异,P < 0.05。下同。

    Figure  2.  SOD activity of sweet maize seedlings at 4 ℃

    Data with different lowercase letters indicate significant differences at P<0.05. Same for below.

    图  3  低温处理下甜玉米幼苗CAT酶活性比较

    Figure  3.  CAT activity of sweet maize seedlings at 4 ℃

    图  4  低温处理下甜玉米幼苗POD酶活性比较

    Figure  4.  POD activity of sweet maize seedlings at 4 ℃

    图  5  低温处理下甜玉米幼苗MDA含量比较

    Figure  5.  MDA content of sweet maize seedlings at 4 ℃

    图  6  低温处理下甜玉米幼苗SP含量比较

    Figure  6.  SP content of sweet maize seedlings at 4 ℃

    图  7  不同时间低温处理下生理指标相关性

    Figure  7.  Correlation between physiological indices of maize and treatment conditions

    图  8  冬季种植下产量性状比较

    Figure  8.  Yield traits of winter season sweet maize

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出版历程
  • 收稿日期:  2023-12-18
  • 录用日期:  2024-03-06
  • 修回日期:  2024-02-19
  • 网络出版日期:  2024-05-08

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