黑龙江省蕨类植物孢子成熟期的调查

黑龙江省严寒而干燥的气候,极不利于蕨类生长。但野生的90余种蕨类,不但能完成营养生长和生殖生长,而且长势强劲,生长量大,因此具有特殊的生理生态学意义。本文首次报导了黑龙江野生拟蕨类和真蕨类共22科38属67种(含3亚种)的孢子成熟期。表明大多数种类的孢子都在7月中旬至8月中旬成熟,水生真蕨类后延20天左右,楔叶类和旱生类孢子发育期较为特殊。本文还简要分析了生态因素与孢子成熟期的关系。

AN INVESTIGATION ON THE SPORE MATURE PERIOD OF PTERIDOPHYTE IN HEILONGJIANG PROVINCE OF CHINA

The severe cold and dry climate is not beneficial to the growth of Pteridophyte in Heilongjiang of china. More than ninty kinds of wild Pteridophyte not only can finish the vegetative growth and reproductive growth, but also they can grow stongly and humberously. So this research has a particular sigaifilance of physiological ecology. It is first reported that there are about 22 familias,38genera,67species (embrace 3 subspecies) of the wild Pteridophyte's and fern's spore mature period in this article. This indicate most of those kinds are mature from the midst of July to the midst of August,but the aquatic Pteridophyte delay twenty days,especially it is diffirent in Sphenopsids and Xeric spore. We also analyze briefly the relationship between the ecological factors and the spore mature period in this article.