EFFECTS OF TEMPERATURE, PHOTOPERIOD AND SEED VERNALIZATION ON FLOWERING IN FABA BEAN VICIA-FABA
EFFECTS OF TEMPERATURE, PHOTOPERIOD AND SEED VERNALIZATION ON FLOWERING IN FABA BEAN VICIA-FABA
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DOI：
10.1093/oxfordjournals.aob.a087524
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发表时间：
1988-01-01
期刊：
影响因子：
4.2
通讯作者：
ROBERTS, EH
中科院分区：
文献类型：
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作者：
ELLIS, RH;SUMMERFIELD, RJ;ROBERTS, EH
对六种不同基因型蚕豆（Vicia fabia L.）的结瘤植物施加三个光周期（10、13和16小时）、两个白天温度（18和28℃）和两个夜间温度（5和13℃）的因子组合。使植物在生长柜的盆中由春化的种子(1.5±0.5℃，30天)和非春化的种子生长。记录从播种到出现第一朵开放花（f）的时间。种子春化缩短了几乎所有基因型随后开花所需的时间。生长环境组合（例外是在三个凉爽、短日照条件下生长的 cv. Maris Bead 植物）。使用先前应用于其他长日照豆科植物的模型量化了温度和光周期对开花率的影响，其中假设温度和光周期与开花进展率之间存在正线性关系。在所有六种基因型中均检测到开花进度对有限范围的平均昼夜温度的显着正线性响应，但在三种基因型（Syrian Local Large、Aquadulce 和 Maris Bead）中，28°C。 C 日温度降低了开花进展速度，表明这些基因型的开花最适温度低于 27°C。 C. 在四种基因型（Maris Bead、Giza-4、Aquadulce 和 BPL 1722）中，仅在由春化种子生长的植物中观察到对光周期的显着正响应，这是定量长日照植物的典型特征。相比之下，由非春化和春化种子生长的基因型 Zeidab Local 植物对光周期表现出相同的积极响应，而陆生叙利亚本地大型植物则始终对光周期无响应。不同基因型之间的这种反应范围的影响与筛选种质有关。
Factorial combinations of three photoperiods (10, 13 and 16h), two day temperatures (18 and 28.degree. C) and two night temperatures (5 and 13 .degree. C) were imposed on nodulated plants of six diverse genotypes of faba bean (Vicia fabia L.). Plants were grown in pots in growth cabinets from both vernalized (1.5 .+-. 0.5.degree. C for 30 d) and non-vernalized seeds. The times from sowing to the appearance of first open flowers (f) were recorded. Seed vernalization decreased the subsequent time taken to flower in almost all genotype .times. growing environment combinations (the exceptions were plants of the cv. Maris Bead grown in three cooler, short-day regimes). The influence of temperature and photoperiod on the rate of flowering was quantified, using a model applied previously to other long-day species of grain legume in which positive linear relations between both temperature and photoperiod and the rate of progress towards flowering are assumed to apply. A significant positive linear response of rate of progress towards flowering to limited ranges of mean diurnal temperature was detected in all six genotypes, but in three genotypes (Syrian Local Large, Aquadulce and Maris Bead) the 28.degree. C day temperature reduced the rate of progress towards flowering suggesting that the optimum temperature for flowering in these genotypes is below 27.degree. C. In four genotypes (Maris Bead, Giza-4, Aquadulce and BPL 1722) a significant positive response to photoperiod, typical of quantitative long-day plants, was observed only in plants grown from vernalized seeds. In contrast, plants of the genotype Zeidab Local grown from both non-vernalized and vernalized seeds showed the same positive response to photoperiod, wheras plants of the land-race Syrian Local Large were consistently unresponsive to photoperiod. The implications of this range of responses amongst diverse genotypes are discussed in relation to screening germplasm.