Effects of N fertilization on yield for low-input production in Spanish wheat landraces (Triticum turgidum L. and Triticum monococcum L.)
Effects of N fertilization on yield for low-input production in Spanish wheat landraces (Triticum turgidum L. and Triticum monococcum L.)
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DOI：
10.1111/j.1439-0523.2007.01406.x
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发表时间：
2007-11
期刊：
影响因子：
2
通讯作者：
M. Ruiz;E. Aguiriano;J. M. Carrillo
中科院分区：
文献类型：
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作者：
M. Ruiz;E. Aguiriano;J. M. Carrillo
在两个氮水平（80和220公斤/公顷）的西班牙硬粒小麦地方品种的核心子集进行了评估，以确定地方品种基因型适应低氮生产。氮素水平之间和两个水平下基因型之间的产量差异均达到统计学显著水平。51%的地方品种产量显着高于低比高氮（低氮品种），而26%有一个积极的（高氮品种）和23%的冷漠（冷漠的氮品种）对氮肥的反应。在低氮水平下，高氮品种与低氮品种的农艺性状差异不显著，低氮品种具有一定的优势。高氮品种在高氮水平下灌浆期较长。物候期性状对产量和各亚组品种的表现有重要影响。对产量影响最大的性状是灌浆期长和早熟，主要是低氮品种。选择5个参试材料进行低氮适应的预育种。
A core subset of Spanish durum wheat landraces was evaluated at two nitrogen levels (80 and 220 kg/ha) to identify landrace genotypes adapted to low N production. Yield differences were statistically significant between N levels and among genotypes at both levels. Fifty-one per cent of the landraces yielded significantly more at low than at high N (low-N varieties) while 26% had a positive (high-N varieties) and 23% an indifferent (indifferent-N varieties) response to N fertilizer. No significant agromorphological differences were found among low and high-N varieties at low N level that conferred some advantage to low-N varieties. In contrast, high-N varieties possessed longer grain-filling period under high N level. Phenological characters showed an important influence on yield and on the performance of the varieties within each subgroup. The traits affecting grain yield most positively, mainly the low-N varieties, were long filling period and earliness. Five entries were selected for prebreeding to low N adaptation.