Of the four products of a megaspore mother cell, three usually abort.
在大孢子母细胞分裂产生的四个孢子中, 三个会解体消失。

The megasporogenesis in Psathyrostachys huashanica begins with archesporial cell.
华山新麦草大孢子发生始于孢原细胞。

The archesporial cell below nucellus epiderm functions directly as the megaspore mother cell.
珠心表皮下的雌性孢原直接发育为大孢子母细胞。

Arrangement of megaspore is linear shaped, the megaspore of chalazal end is functional megaspore.
大孢子排列为直线型，合点端大孢子为功能大孢子。

Very few gaspowered passenger cars can beat the Chevy Volt off the line.
燃油动力的乘用车很少能打败雪佛兰伏特。

As development goes on, callose fluorescence disappears in the chalazal wall of diplosporous functional megaspore.
二倍体功能大孢子的合点端细胞壁内的胼胝质荧光消失。

There is only one layer of parietal cells at the stage of sporogenous cell, megaspore mother cell and tetrad.
造孢细胞，大孢子母细胞和四分体时期，周缘细胞仅1层。

Function megaspore is in the chalaza and the monosporic embryo sac is chenopodiad type.
功能大孢子位于合点端，大孢子发育为蓼型胚囊。

Megasporogenesis, Microsporogenesis and Development of Female and Male Gametophyte of Hemerocallis citrine Baroni
黄花菜大孢子和小孢子的发生及雌，雄配子体的发育

Successive cytokinesis in the megasporocyte follows meiosis and the megaspore tetrads are linear.
大孢子母细胞减数分裂形成直线型四分体。

Generally, the chalazal megaspore functions while the remaining three degenerate.
珠孔端3个退化，合点端为功能大孢子。

The gametophyte is derived from the product of a reduction division in the megaspore mother cell.
该配子体是由大孢子母细胞进行减数分裂而来。

DEVONIAN MEGASPORES FROM THE ZHANYI DISTRICT, E.YUNNAN
云南沾益龙华山泥盆纪大孢子

Megasporogenesis starts with meiotic division of the diploid megasporocyte
二倍的大孢子母细胞开始减数分裂

DISCOVERY OF MEGASPORES FROM THE UPPER PART OF THE LEIGUTAI FORMATION IN JUYONG OF JIANGSU AND ITS STRATIGRAPHICAL SIGNIFICANCE
江苏句容五通群擂鼓台组上部大孢子的发现及其地层意义

It has evolved by fusion of the two edges of the megasporophyll.
心皮是由大孢子叶两边愈合进化而来的。

Genesis of megaspore and development of embryo sac in Carica papaya L.
番木瓜的大孢子发生与胚囊发育。

Observation by paraffin section showed that Lipeng No.2 embryo sac mother cells were almost entirely degenerated during megasporogenesis.
切片观察发现, 丽号胚囊母细胞在四核期已完全退化。

Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type.
大孢子四分体为线形，合点端功能大孢子发育成为蓼型胚囊。

Observation by paraffin section showed that Lipeng No. 2 embryo sac mother cells were almost entirely degenerated during megasporogenesis.
切片观察发现, 丽椪2号胚囊母细胞在四核期已完全退化。

MONOXENIC CULTURE OF GIGASPORA MARGARITA IN NUTRIENT SOLUTION AND PROPERTIES OF EXUDATES FROM HOST ROOTS
珠状巨孢囊霉的单主寄生营养液培养及宿主根分泌物特性

It is said to have come from a gaspowered generator being used to heat the home.
据说这是从一个燃气发电机被用来加热家里来了。