Effects of temperature and light intensity on flowering of barley (Hordeum vulgare L.)

被引:8
|
作者
Karsai, Ildiko [1 ]
Koszegi, B. [1 ]
Kovacs, G. [1 ]
Szucs, P. [1 ]
Meszaros, Klara [1 ]
Bedo, Z. [1 ]
Veisz, O. [1 ]
机构
[1] Hungarian Acad Sci, Agr Res Inst, H-2462 Martonvasar, Hungary
来源
ACTA BIOLOGICA HUNGARICA | 2008年 / 59卷 / 02期
关键词
temperature; light intensity; flowering and barley; Hordeum vulgare L;
D O I
10.1556/ABiol.59.2008.2.7
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
In order to analyse the effects of temperature (9-22 degrees C) and light intensity (170-576 pmol m(-2) s(-1)) on plant development two barley varieties with contrasting seasonal growth habits were included in a series of experiments consisting of controlled environment tests. The effect of constant (18 degrees C) and daily fluctuating (18/16 degrees C) temperature with a long photoperiod was also examined in a set of barley varieties including winter, facultative and spring barleys. Dicktoo with facultative growth habit was more sensitive to unfavourable conditions than Kompolti korai with winter growth habit; the flowering of Dicktoo was significantly delayed by sub- and supra-optimal temperatures and low light intensity accompanied by higher or fluctuating temperatures. The optimal temperature at flowering was also significantly lower for Dicktoo than for Kompolti korai (16.0 degrees C vs. 21.0 degrees C, respectively). Plant development was the fastest when there was no fluctuating environmental factor in the growing conditions and was significantly delayed with application of photo cycle. The addition of thermo cycle to photo cycle had an even stronger delaying effect. Facultative barleys were the most sensitive, followed by winter barleys, while spring barleys the least sensitive to the introduction of thermo cycle.
引用
收藏
页码:205 / 215
页数:11
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