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澳古茨藻(NajasoguraensisMiki)是典型的水下水媒传粉植物。雄花在花粉释放前2—4h花梗迅速伸长,突破膜质鞘状外被,并且向外弯曲,至花粉释放盛期几乎是水平状态,有利于释放后的花粉直接进入水流以求传播。花部组成与结构极为简化,花粉中富含淀粉粒,花粉落置柱头前常萌发出长的花粉管,形成宜为柱头捕获的花粉笺,表现出对水下水媒传粉的高度适应。有性繁殖十分发达,自交、异交和混交的结实率都在85%以上;花粉/胚珠(P/O)为2690±300,指示兼性自交的繁育系统。无性繁殖较弱,仅以易长不定根的植株片段形式存在,但仍对该种的扩散具有重要意义。作者对澳古茨藻的花生物学特征、传粉机制以及繁育系统进行了探讨,对澳古茨藻表现出的许多沉水植物所特有的特征特性:花被的简化、花粉外壁的简化作了解释,讨论了繁育系统中自交与异交的关系。
Najasoguraensis Miki is a typical underwater pollination plant. Male flowers pedicels 2-4h before pollen shed quickly elongation, break membranous outer sheath is shaped and bent outwardly to release pollen peak almost horizontal state, the pollen is released directly into the water facilitates order to spread. Floral composition and structure is extremely simplified, pollen grains rich in starch, pollen drop of water placed on highly adaptable water pollinated stigmas often before germination of pollen tube length, is suitably formed stigma pollen memo captured exhibited. Sexual reproduction is developed, selfing, outcrossing, and the mixed seed rate above 85%; pollen / ovule (P / O) was 2690 ± 300, and indicative of self-breeding system. Asexual reproduction is weak, only in the form of easily adventitious roots of plant fragments, but is still important for the proliferation of the species. On the biological characteristics of flower Australia Gouts algae, breeding systems and pollination mechanisms were discussed, the Australian Gouts algae exhibit a number of submerged plants peculiar Characteristics: perianth simplify, simplify pollen outer wall made Explain and discuss the relationship between selfing and outbreeding in breeding system.