两个双单倍体小麦群体的营养活力特征

IF 1 Q3 AGRONOMY

Journal of Crop Improvement Pub Date : 2021-08-25 DOI:10.1080/15427528.2021.1970675

T. P. Khumalo, A. Barnard, E. Dube, T. Tsilo

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引用次数: 3

摘要

摘要：提高小麦（Triticum aestivum L.）的粮食产量需要采取重大而紧急的干预措施，以避免预测的全球粮食不安全危机。对两个双单倍体（DH）小麦群体在四种环境中的归一化差异营养指数（NDVI）、营养指数比（VI ratio）、株高（PH）和穗长（EL）进行了评价，以筛选出营养活力强的DH系。基因型和环境表现出显著（p＜0.001）的影响，只有PH通过环境相互作用表现出显著的（p＜0.018）基因型。NDVI与VI之比在所有环境中均呈负相关（r2=−1–−0.99）。NDVI与PH（r2=0.31–0.40）和PH与EL（r2=0.41–0.54）呈正相关，表明可能同时改善。近23%具有精确、固定、变异最大、营养活力强的DH系是有效提高小麦产量潜力的潜在材料，进而提高产量。

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Characterization of vegetative vigor of two doubled-haploid wheat populations

ABSTRACT Major and urgent interventions are needed in improving wheat (Triticum aestivum L.) grain yield to avert the predicted global crisis of food insecurity. Two doubled-haploid (DH) wheat populations were evaluated for normalized difference vegetative index (NDVI), vegetative index ratio (VI RATIO), plant height (PH) and ear length (EL) in four environments with an aim to select DH lines with strong vegetative vigor. Genotypes and environments showed significant (p < 0.001) effects and only PH showed a significant (p < 0.018) genotype-by-environment interaction. The NDVI vs. VI RATIO showed a negative correlation (r2 = −1 – −0.99) in all environments. Positive correlations existed for NDVI vs. PH (r2 = 0.31– 0.40) and PH vs. EL (r2 =0.41– 0.54), suggesting a possible simultaneous improvement. Almost 23% of DH lines with precise, fixed, maximum variation, and strong vegetative vigor formed potential material for efficiently enhancing yield potential of wheat, which in turn could improve yield.

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来源期刊

Journal of Crop Improvement Multiple-

CiteScore

3.30

自引率

7.70%

发文量

期刊介绍： Journal of Crop Science and Biotechnology (JCSB) is a peer-reviewed international journal published four times a year. JCSB publishes novel and advanced original research articles on topics related to the production science of field crops and resource plants, including cropping systems, sustainable agriculture, environmental change, post-harvest management, biodiversity, crop improvement, and recent advances in physiology and molecular biology. Also covered are related subjects in a wide range of sciences such as the ecological and physiological aspects of crop production and genetic, breeding, and biotechnological approaches for crop improvement.