Due to the abnormal anthocyanin accumulation , the purple spotted pigmentation was observed in the immature seed coats . in the wide type plants , the normal immature seeds were pale green 由于花青苷的異常積累,突變體未成熟種子的種皮呈現(xiàn)紫紅色的斑點;野生型植株幼嫩的種皮沒有花青苷的異常積累,呈淡綠色。
Seed macromorphology and seed - coat micromorphology of 11 species of kadsura ( schisandraceae ) represented by 36 samples were observed under light microscope ( lm ) and scanning electron microscope ( sem ) 在光學顯微鏡和掃描電鏡下對南五味子屬11種植物36個樣品的種子宏觀形態(tài)及種皮微形態(tài)特征進行了研究。
The main causes for dormancy of water dropwort aren ' t seed coat obstacle and physiological dormancy of embryo , but some inhibitors which may be the key factor cousing deep dormancy of water dropwort 但種皮障礙、胚的生理休眠不是水芹種子休眠的主要原因;發(fā)芽抑制物質(zhì)可能是引起水芹種子深休眠的關鍵性因素。
Terminology in common use is collected and introduced , such as seed like fruit , structures of seed , surface and section of seed , appendages , specialized structures on the seed coat , texture , and so on 解釋了常用種子形態(tài)學術語,包括種子狀果實、種子各組成部分、種子表面及切面、附屬物、種皮特化結(jié)構(gòu)、質(zhì)地等。
The methods for breaking dormancy in hard seeds are generally classified into physical , chemical and biological treatments , which hasten germination by improving seed coat permeability , gas exchange , and water entrance and relieve mechanical constraints 硬實的處理方法大體可分物理、化學和生物3類,這些方法通過改善種皮的通透性,促進氣體交換和水分進入,消除機械限制而促進萌發(fā)。
We studied water permeability of seed coat , development of embroy , absence or presence of germination inhibitors and some other aspects in order to confirm the dormany causes of mulberry seeds from north of heilongjiang province 摘要從種皮透性、胚的發(fā)育、是否存在萌發(fā)抑制物等方面,對產(chǎn)于黑龍江省的實生桑種子休眠原因進行了研究,初步認為,胚的生理性休眠是實生桑種子休眠的主要原因。
Secondly , the observation of the arabidopsis thaliana seeds which were irradiated by the ion beam through the sem found that with the increase of the ion beam dose , the ion beam mechanical erosion degree of the seeds was deep . and there are many holes and gaps in the surface of the seeds in dose 通過掃描電鏡對離子注入后的擬南芥種子的觀察發(fā)現(xiàn),經(jīng)離子注入過的種子種皮有明顯的孔洞和裂痕,并且注入離子對干種子表皮的作用程度隨劑量的增大而加深。
This review focused on the developments of plant synthetic seed technology in the past 20 years , and summarized different items on artificial seeds : the concept , significance , status , application prospect , induction and synchronization of somatic embryogenesis , the way of encapsulating , artificial coat , maturation drying , storage and preservation , etc 摘要本文綜述了近20年來植物人工種子研究的進展,并對人工種子的諸領域:概念、意義、動態(tài)、應用前景、體細胞胚的誘導與同步化、包埋方法、人工種皮、干化、貯藏及防腐等進行了概述。
The size and shape of the seeds , and the position of the hilum are of no important systematic significance , but the protruding degree of the hilum , the shape of the testa cells and the pattern of their cell walls , particularly the appendages of the in ner side , are of important value in the phylogenetic consideration of the tribe hyoscyameae 各屬植物的種子大小、形狀及種臍著生位置的系統(tǒng)學意義不大。但是,種臍突出與否、種子外種皮細胞形狀和周壁式樣,尤其是周壁內(nèi)側(cè)附屬物等性狀具有較大的分類學意義。