新疆农业大学学报
新疆農業大學學報
신강농업대학학보
JOURNAL OF XINJIANG AGRICULTURAL UNIVERSITY
2014年
2期
106-111
,共6页
十字花科%棒果芥属%花粉形态%扫描电镜
十字花科%棒果芥屬%花粉形態%掃描電鏡
십자화과%봉과개속%화분형태%소묘전경
Brassicaceae%Sterigmostmum%pollen morphology%scanning electron microscope (SEM)
对十字花科棒果芥属8个物种的花粉形态进行了扫描电镜观察研究.结果表明，棒果芥属8个物种的花粉形态均为长球形(P/E ＝1．33~1．84)；花粉粒具三孔沟，沟长达两极；极面观为三裂圆形，赤道面观为椭圆形；花粉具网状纹饰，稀粗网状纹饰，网眼为不规则的多边形.花粉数量特征在种间有一定差异，依据纹饰类型及萌发沟深浅均可将8种植物花粉分为2个类型.
對十字花科棒果芥屬8箇物種的花粉形態進行瞭掃描電鏡觀察研究.結果錶明，棒果芥屬8箇物種的花粉形態均為長毬形(P/E ＝1．33~1．84)；花粉粒具三孔溝，溝長達兩極；極麵觀為三裂圓形，赤道麵觀為橢圓形；花粉具網狀紋飾，稀粗網狀紋飾，網眼為不規則的多邊形.花粉數量特徵在種間有一定差異，依據紋飾類型及萌髮溝深淺均可將8種植物花粉分為2箇類型.
대십자화과봉과개속8개물충적화분형태진행료소묘전경관찰연구.결과표명，봉과개속8개물충적화분형태균위장구형(P/E ＝1．33~1．84)；화분립구삼공구，구장체량겁；겁면관위삼렬원형，적도면관위타원형；화분구망상문식，희조망상문식，망안위불규칙적다변형.화분수량특정재충간유일정차이，의거문식류형급맹발구심천균가장8충식물화분분위2개류형.
Pollen morphology of eight species of Sterigmostemun (Brassicaceae)was observed by using scanning electron microscope for the first time.The results showed that the pollen grains of all observed species were prolate (P/E =1.33~1.84),tricolpate (3 germinal aperture)with furrows almost extending to the both poles.They were elliptic from equatorial apparent view.Pollen grains had reticulate sculpture and rarely wide-reticulate,the mesh of reticulate sculpture showed irregular polygon.Some differences of the quantative characters of pollen grains existed among eight species.Based on the reticulate type or the depth of germinal aperture,the pollens of eight species could be divided into two groups.
