ONION PLANT-GROWTH, BULB QUALITY, AND WATER-UPTAKE FOLLOWING AMMONIUM AND NITRATE NUTRITION

被引：46

作者：

GAMIELY, S ^{[1
]}

RANDLE, WM ^{[1
]}

MILLS, HA ^{[1
]}

SMITTLE, DA ^{[1
]}

BANNA, GI ^{[1
]}

机构：

[1] MANSOURA UNIV,DEPT HORT,MANSOURA,EGYPT

来源：

HORTSCIENCE | 1991年 / 26卷 / 08期

关键词：

ALLIUM-CEPA; NITROGEN FORM; PYRUVATE; SUGAR; YIELD;

D O I：

10.21273/HORTSCI.26.8.1061

中图分类号：

S6 [园艺];

学科分类号：

0902 ;

摘要：

Nitrogen applied as NH4-N or NO3-N (75 mg.liter-1) affected onion (Allium cepa L.) plant growth when grown in solution culture. Nitrate alone or in combination with NH4-N increased leaf fresh and dry weight, leaf area, root fresh and dry weight, and bulb dry weight when compared to growth with NH4-N as the sole N source. Bulb fresh weight was highest with an NH4-N:NO3-N ratio between 1:3 and 3:1. Maximum leaf fresh weight was not necessary to produce maximum bulb fresh weight when onions were subjected to different N-form ratios. Precocious bulbing resulted when NH4-N was the sole N source; however, high bulbing ratios early in plant development were not correlated with final bulb fresh weight. Nitrogen form also influenced water uptake and pungency, as measured by enzymatically developed pyruvate concentration, but did not affect bulb sugar concentration.

引用

页码：1061 / 1063

页数：3

共 24 条

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[2]

BRETELER H, 1973, Netherlands Journal of Agricultural Science, V21, P227

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