THE EFFECT OF TEMPERATURE AND DAYLENGTH ON THE GERMINATION OF POTAMOGETON NODOSUS TUBERS

被引：7

作者：

FLINT, NA ^{[1
]}

MADSEN, JD ^{[1
]}

机构：

[1] USA,ENGINEER WATERWAYS EXPT STN,LEWISVILLE AQUAT ECOSYST RES FACIL,LEWISVILLE,TX 75056

来源：

JOURNAL OF FRESHWATER ECOLOGY | 1995年 / 10卷 / 02期

关键词：

D O I：

10.1080/02705060.1995.9663426

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The effects of temperature and daylength were studied in the germination of American pondweed (Potamogeton nodosus Poir.) tubers. Germination was examined at temperatures ranging from 5 to 30 degrees C in conjunction with light treatments of short and long daylength and continuous darkness. Greatest percentage of tuber germination occurred between 15 and 20 degrees C. Within this temperature range, daylength did not significantly affect germination. Outside this temperature range, however, the absence of light inhibited germination. From these results, we conclude that temperature was the most important factor controlling germination, with an optimal range of 15 to 20 degrees C. Daylength (14:10 versus 10:14) had no effect on germination, but the absence of light suppressed germination at 10, 25, and 30 degrees C. The results were further supported by similar data obtained from a pond study of P. nodosus.

引用

页码：125 / 128

页数：4

共 7 条

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