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小穗

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Inflorescence a single cylindrical bilateral raceme; spikelets alternate, sessile, borne edgeways and sunken in hollows on opposite sides of articulated rachis, falling with adjacent rachis internode; rachis terminating in a spikelet.

花序一挑选圆筒状的两侧的总状花序;互生的小穗,无梗,边向前着生和沉没在对生边的有节轴上在穴,下降具临近轴;轴终止在一小穗

The ecological mechanism of fertility transition for a thermo-sensitive genic male sterile line,Qiong-68 ms,was evaluated by means of sowing by stages,investigating leafage and detecting the fertility of pollen.

采用分期播种、叶龄调查以及花粉镜检等方法,对玉米温敏核雄性不育系琼68 ms 育性转换的生态机制进行了研究,发现琼68 ms的育性变化主要受温度影响,日最高温度是其育性转换的主要因素,表现为高温不育,低温可育,育性转换的温度范围为30~33℃,雄穗发育的小穗分化期是对温度敏感的关键时期。

Wheat outbreeding population DNS1 was created with Taigu male\|sterile wheats and singletrait\|selected divergently.

用太谷核不育小麦构建小麦异交群体DNS1,对株高、穗粒数、千粒重、小穗密度分别进行单性状集团岐化选择,经过四代,各选择处理已表现出一定趋势。

Wheat outbreeding population DNS1 was created with Taigu malesterile wheats and singletraitselected divergently.

用太谷核不育小麦构建小麦异交群体DNS1,对株高、穗粒数、千粒重、小穗密度分别进行单性状集团岐化选择,经过四代,各选择处理已表现出一定趋势。

Determination of panicle number generally precedes determination of spikelet number.

穗数的确定通常先于小穗数的确定。

Spikelets laterally compressed, florets several, all bisexual or lowest sterile and without a palea; rachilla glabrous, disarticulating above glumes and sterile floret and between fertile florets; glumes lanceolate, shorter than lemmas, subequal or unequal, scarious-membranous, 1–3-veined, obtuse to acuminate or aristulate; lemmas ovate-lanceolate, scarious-membranous, 3-veined, long-ciliate on lateral veins, keeled, apex setaceously bidentate with a short, often recurved awn from the sinus; palea shorter than lemma, hyaline, keels very shortly ciliate.

小穗侧面压扁,小花数个,全部不育和没有一内稃的最低的两性的或;高于颖片和不结果的小花无毛,脱节的小穗轴和在肥沃的小花之间;披针形的颖片,短于外稃,近等长或不等长,干膜质膜质,1-3脉,具小芒的钝到渐尖或;卵状披针形,干膜质的外稃膜质,3脉,具长缘毛在侧脉上,龙骨状,先端setaceously具双齿具短,通常下弯从那里那些凹缺;内稃短于外稃,透明,龙骨非常短的纤毛。

Panicle spikelike, dense, linear to ovate or oblong in outline, lower part sometimes interrupted, 1.5–11 cm; branches short, appressed, pubescent to tomentose. Spikelets 4–9 mm, florets 2(or 3); rachilla hairs 1–1.5 mm; glumes subequal or slightly unequal, lower glume 4–8 mm, upper glume 5–9 mm, apex acuminate, occasionally briefly aristulate; lemmas lanceolate, 4–7 mm, scaberulous to pubescent, awned from upper 1/4–1/3, apex usually 2-denticulate, teeth often mucronate, occasionally subentire; awn 2–7 mm, weakly geniculate with loosely twisted column, or recurved at base, or almost straight; palea keels scaberulous.

小穗4-9毫米,小花2;小穗轴头发1-1.5毫米;颖片近等长或稍不等长,下部颖片4-8毫米,上面颖片5-9毫米,先端渐尖,偶有短暂具小芒;披针形的外稃,4-7毫米,对短柔毛来说微糙,从上面1/4-1/3,先端通常2具小齿,短尖,偶有近全缘的齿通常具芒;芒2-7毫米,用松弛缠绕的柱子,或下弯在基部身体虚弱膝曲,或者几乎直;内稃龙骨微糙。

Spikelets laterally compressed, florets 1 to several, loosely spaced, rachilla slender, disarticulating above glumes and between florets, rachilla internodes pubescent at apex; glumes membranous, very unequal with the lower shorter, 1–5(–7)-veined; lemmas narrowly lanceolate to ovate, 3–5(–7)-veined, keeled, usually pubescent near margins, apex narrow, bidenticulate or rarely entire, acute, mucronate or shortly awned; palea keels glabrous or ciliolate.

小穗侧面压扁,小花1到数个,松弛隔开,纤细,脱节的小穗轴高于和在小花,小穗轴节间短柔毛在先端之间;颖片膜质,极不等具这更下部的短,(-7)脉;外稃狭披针形的到卵形,内稃龙骨无毛或者具短缘毛。

Spikelets alike (except Cortaderia , Elytrophorus ), laterally compressed, fertile florets several, uppermost florets reduced, disarticulating between florets; floret callus usually bearded, short and obtuse or elongate; glumes persistent, variable in length, shorter than lemmas to as long as spikelet, usually membranous, 1–9-veined, apex acute to acuminate; lemmas rounded on back, hyaline to leathery, glabrous, pilose or villous, hairs sometimes in tufts,(1–)3–11-veined, apex entire or 2-lobed, awnless or a straight or geniculate awn with flat twisted column arising from apex or sinus, lobes often extended into bristles; palea well developed.

除Cortaderia,Elytrophorus之外一样的小穗,侧面压扁,能育小花数个,在小花之间退化,脱节的最上部的小花;通常公然反对,缺乏的小花结茧和抑制或者拉长;颖片宿存,在背面上圆形的外稃,透明的到革质,无毛,具柔毛或者具长柔毛,有时的毛成丛,(1-)3-11脉,内稃发育良好。

Spikelets dorsally compressed, florets 1 or 2, disarticulating above glumes and between florets, rachilla extension with apical rudimentary floret present; lower glume minute or suppressed; upper glume leathery, appressed to rachis, exceeding and covering the sunken florets, closely 5–12-veined, apex acute to caudately awned; lemma much shorter than upper glume, rounded on back, cartilaginous to hyaline, 3-veined, apex obtuse to acute; palea membranous, usually equal to lemma.

小穗压扁,小花1或2,脱节高于颖片和在小花,小穗轴扩展具顶端不发育之间宿存;压抑的更低的颖片小或;上面颖片革质,贴伏于轴,超过和包括沉没的小花,接近5-12脉,对具芒caudately先端锐尖;外稃远短于上面颖片,在后面,对透明,3脉,先端钝的到锐尖软骨上绕行;内稃膜,通常等于外稃。

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