不育

Observation was made on the cell morphology of the microspore development of the sterile and fertile plants in the Aibai wheat.

对矮败小麦中的可育株和不育株进行了小孢子发育过程的细胞形态学观察。

Glumes absent; fertile lemma oblong-lanceolate, to 2.4 cm, many veined, apex acute, long mucronate, mucro ca. 3 mm; sterile lemma oblong-lanceolate, ca. 1.5 cm, mucro short.

颖片无；长圆状披针形的能育外稃，在2.4厘米，很多脉，先端锐尖，短尖的长，短尖头约3毫米；不育外稃长圆状披针形，约厘米，短尖头。

Fertility transformation of a photoperiod sensitive sterile line is caused by the joint effect of light and temperatur.

光敏不育系的育性转换是光温共同作用的结果。

Purpuraristatus, the growth, fertility, chromosome configuration, EST isozyme etc. were analyzed in this paper. The results showed that the growth potentiality of (E. sibiricus×E. purpuraristatus) F2 and (E. purpuraristatus×E. sibiricus) F1 were much stronger than their parents, the plant height of the former was 143.2 cm. The whole plant was reseda, the latter was 129.7 cm. The spike nodding of two hybrids were in the middle of their parents, the anther was yellow; the pollen fertility was 0.02%~0.03%, seed set was 0; the average chromosome configuration of former pollen mother cell at PMC M Ⅰ was 6.90Ⅰ+14. 02Ⅱ, the latter was 7.82Ⅰ+13.59 Ⅱ, and lagging chromosome and bridge fragment were observed at meiosis anaphase Ⅰ the EST of the two hybrids F1 and their parents at tillering stage was some certain different in locus, number and intensity.

结果表明，正交F1和反交F1植株的生长势均很强，正交F1株高143.2 cm、全株浅绿色，反交F1株高129.7 cm、全株灰绿色；正、反交F1的穗型均呈双亲中间型，花药呈黄色，花粉可育率0.02%~0.03%，结实率为0，说明杂种高度不育；正交F1的花粉母细胞减数分裂中期Ⅰ平均染色体构型为6.90Ⅰ+14.02Ⅱ，反交F1为7.82Ⅰ+13.59Ⅱ，减数分裂后期丁有落后染色体和染色体桥等不规则现象；亲本及其正、反交杂种F1分某期幼叶的EST同工酶酶带的位点、数目和强弱均存在一定差异，可作为亲本及杂种在蛋白质水平识别的重要依据。

Cluster analysis also revealed that satsuma mandarin had closer relatedness with Bendiguangju mandarin than with Zaoju, Manju, Bendizao tangerine.

柑橘不育与低育资源的遗传多样性分析将为此类资源的收集保存及应用提供依据。

Fruit deeply lobed into 2 or 3 schizocarps, usually 1 or 2 developed; fertile schizocarp berrylike, subglobose, with small sterile schizocarps at base, pericarp leathery, endocarp papery.

果深裂2或3分果，通常1或2 发育；浆果状，近球形的能育分果，具小的不育分果在基部，果皮革质，纸质的内果皮。

Fertile and sterile pools were set up by bulked segregant analysis based on the selection for the highly fertile and highly sterile plants of Shanyou 63 F_2 populaiton The AFLP analysis of the two pools indicated that 64 primer combinations amplified 3 477 stable and clear bands.

选择汕优63F_2的高可育株和高不育株分别建立 2个基因池，利用 AFLP标记技术对2 池间的多态性进行了研究。分析表明，64组引物在两池间全部扩增出了稳定、清晰的带纹，共计3 477条带。

And many mutant plants such as male sterile, large silique, large spike, and leaf color etiolating properties were discovered.

加倍材料自交1代群体（D2代）呈现丰富的农艺性状、育性等方面的变异，出现了雄性不育、大角果、大粒、叶色黄化等很多不同变异类型的植株。

From tetrad stage to microspore stage, the ABA content in sterile buds was higher than fertile buds.

四分体到小孢子单核期和小孢子二核后期至成熟花粉期不育花蕾ABA含量仍高于可育花蕾。

In present study, we found that Cipangopaludina chinensis has two kinds of sperm, one is the viable typical sperm, and the other is the unviable atypical sperm.

结果表明：中国圆田螺的精子具有双态现象，即既有可育的典型精子，又有不育的异型精子。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。