小穗

Inflorescences terminal and axillary, racemes subdigitate or axillary racemes sometimes solitary, spathate; racemes bearing pairs of unisexual awnless spikelets, female and male spikelets separated into different zones, axis fragile, especially in female zone; lateral racemes of digitate cluster entirely staminate, terminal raceme and solitary axillary racemes mixed, usually sterile spikelet pairs at base, then a zone with female sessile and sterile pedicelled spikelets, distally both spikelets of a pair staminate, uppermost spikelet pairs sterile.

花序顶生和腋生，总状花序或腋生总状花序有时单生，；总状花序着生单性awnless小穗，女性和男小穗分成不同区域，脆的轴，特别是女区域；侧总状花序的完全雄蕊花的指状簇生，顶生总状花序和单生总状花序混合，通常不育对在基部，一女的区域具无梗和不育pedicelled小穗，一雄蕊花的对，不育的最上部的小穗对的两小穗的上部的然后。

Inflorescence a single, stiff, 2-sided raceme, spikelets arranged edgeways on, alternate in 2 opposite rows, their inner edges sunk in hollows of the tough rachis. Spikelets laterally compressed, florets several to many, uppermost florets reduced, disarticulating below each floret; glumes leathery; lower glume suppressed except in terminal spikelet and there similar to upper; upper glume abaxial, narrow, persistent, shorter than lemmas to as long as spikelet; lemmas membranous to leathery, rounded on back, 5–9-veined, with or without a subterminal awn; palea usually equal to lemma.

花序一单个，硬，2边的总状花序，小穗侧面压扁，小花数枚到多数，在每小花下面退化，脱节的最上部的小花；颖片革质；压抑的更低的颖片除了在顶生的小穗里和那里类似于上面；背面，狭窄，宿存的上面颖片，短于外稃在倍于小穗；外稃膜质到革质，在背面上圆形，5-9－脉，有或没有一芒；内稃通常等于外稃。

Spikelets of a pair heteromorphic, lower spikelet glabrous or almost so, upper spikelet conspicuously hairy

一对异形，下部小穗无毛或几乎如此，显著有毛的上面小穗的小穗 3

According to Mather and Jinks model, using generations mean analysis m eth od, the various kinds of gene effects and its percentage of gene-effect-square s um were estimated,and comparative analysis on the gene effects and the importan ce t o inheritance of characters was carried out between the supernumerary spikelet l ines.

黄毅以主穗小穗数在25～30个的二个普通小麦多小穗品系85DH5015、SW94-30921 与三个普通小麦品种组配成6个组合的P1、P2、F1、F2、B1、B2为材料，用世代均值法分析了6个性状的遗传模型并估算了各类基因效应值，比较分析了两个不同来源多小穗小麦品系六个性状各类基因效应的异同及其相对重要性。

The results showed that length from flag leaf pulvinus to spike base has the largest coefficient of variance of 42.1% and 37.2% in both DS and WW environments, respectively, while the spikelet per spike has the smallest CV of 6.4% and 5.7%. Under different water regimes, spike number per plant, effective spikelet per spike and peduncle length contribute a lot to the stable grain yield. Genetic diversity indices of DTI were from 1.95 to 2.07, with an average value of 2.02. Based on the DTI of agronomic traits, all accessions could be clustered into seven groups, the first and third groups are not sensitive to the water regimes, and the second group is more suitable for planting in dryland.

结果表明：在雨养和灌溉条件下，穗叶距的变异系数最高，分别为42.1%和37.2%，单穗总小穗数的变异系数最低，为6.4%和5.7%；不同水分条件下，植株稳产性主要受单株穗数、有效小穗数及穗下节长的影响；性状耐旱指数的多样性指数在1.95到2.07之间变化，平均值为2.02；根据性状耐旱指数将供试材料分为7个类群，其中第I、第III类群材料表现为对水分条件不敏感，而第II类群材料更适于在干旱条件下种植。

Panicle open, 10–30 cm; branches in distant whorls, capillary, flexuous, 5–15 cm, mostly unbranched, tipped by a raceme; racemes 2–5-noded with 7–13 spikelets, sometimes branched with up to 40 spikelets, disarticulating at maturity, one spikelet of a pair sessile, the other pedicellate; rachis internodes and pedicels slenderly clavate, margins ciliate, hairs 0.7–1 mm. Spikelets 4.5–5 mm; callus hairs ca. 1 mm; lower glume lanceolate, thinly pilose, veins smooth below middle, scaberulous above, apex acuminate; upper glume ciliate on margins, acuminate or emarginate and mucronate; lower floret sterile, palea reduced; upper lemma 2-lobed to middle; awn 5.5–8 mm.

圆锥花序打开，10-30厘米；在远轮生方面的分枝，发状，，5-15厘米，多数不分枝，被总状花序端部； 7-13小穗2-5有节具的总状花序，40小穗的有时分枝具可达，成熟时脱节，一对无梗，另一个的一小穗；棍棒状的轴节间和花梗slenderly，边缘具缘毛，头发0.7-1毫米小穗4.5-5毫米；胼胝体毛约1毫米；披针形，稀疏具柔毛的下部的颖片，脉平滑的中间以下，在上面微糙，先端渐尖；在边缘上具缘毛的上面颖片，渐尖的或微缺和短尖；不育的下部小花，退化的内稃；上面外稃2裂的至中部；芒5.5-8毫米花粉囊2-3毫米。

In this paper, the biological characteristics of florescence, spikelet and inflorescences structure, morphogenesis formation of inflorescence, megasporogenesis and the development of female gametophytes were studied systematically by using anatomy structure, scanning electron microscopic and paraffin section methods. The results were as followed:(1) Phyllostachys praecox was the bamboo flowering fragmentarily; the cultivation changed the characteristic of flowering; the plantlets of flowering were complex and splitted into three kinds: the plantlet flowering before continued flowering; the plantlet flowering before stopped flowering and the plantlet changed into flowering. The inflorescence of Ph. praecox was indefinite inflorescence or called false inflorescence, and actually it was flower stress structure. Its basal unit was pseudospikelet with two kinds: apical spikelet and lateral spikelet. The floret had one lemma, one pelea, three stamens, one pistil and three lodicules.

本研究综合运用形态解剖学、扫描电镜、石蜡切片等技术手段，对雷竹花期生物学特性、小穗与花序构造、花序形态建成过程、大孢子发生与雌配子体发育等进行了较为系统的研究，结果表明：(1)雷竹为零星开花竹种，耕作条件对其开花特性具有重要影响；开花植株类型复杂多样，可以分为以前开过花现在继续开花、以前开过花现在停止开花以及以前未开过花现在转为开花等3种类型；雷竹花序为无限制花序或称&假花序&，实为花枝结构，基本单位为&假小穗&；假小穗有顶生和侧生之分；小花具内外稃各1枚，雄蕊3，雌蕊L，另具3枚大小不等之鳞被。

Culms forming large clumps, erect, 10–50(–120) cm tall, 3–35 mm in diam. Leaf sheaths mostly longer than internodes, smooth; leaf blades linear, flat or inrolled upward, 10–45 × 0.7–1.5 cm, smooth, apex fine, hard, upper blades usually patent; ligule 2–3 mm. Racemes racemosely arranged, 2–6(–12), 7–23 cm, stiff, erect or slightly spreading; spikelets closely overlapping; rachis terminating in a hard bristle up to 5 cm. Spikelets 12–21 mm, pubescent; lower glume 2/3–4/5 as long as spikelet, acute; upper glume lanceolate-oblong, as long as spikelet, acute; lemma lanceolate-oblong, ca. 1 cm, keel scaberulous, pubescent, entirely or in upper half; palea slightly longer than lemma.

形成的秆大丛生，直立，(-120)厘米高，多数叶鞘3-35毫米直径长于，平滑；叶片线形，公寓或向上， 10-45 * 0.7-1.5 厘米，平滑，先端细，硬，上面的叶片通常开展；安排的2-3毫米外消旋体总状分枝的叶舌，2-6(-12)，7-23厘米，硬，直立或者稍开展；小穗接近重叠；轴终止在一难的硬毛可达5 厘米小穗12-21毫米，青春期；更低的颖片2/3-4/5倍于小穗，锐尖；上面颖片披针形长圆形，倍于小穗，锐尖；外稃披针形长圆形，约1厘米，微糙，青春期的龙骨，完全或者在上半部；稍微的内稃长于外稃。

Inflorescence a raceme with 2 or 3(–6) spikelets, rarely a panicle with many spikelets, peduncle, axis, branches, and pedicels slender, glabrous, scabrous or pubescent along longitudinal angles, branches usually subtended by a scaly bract at base. Spikelets ± compressed at maturity, several to many florets; rachilla disarticulating below fertile florets, extended beyond palea of uppermost floret, internodes flattened or concave on side facing floret.

花序为一总状花序具2或3(-6)小穗，一圆锥花序具很多小穗，花序梗，轴，分枝和花梗纤细，沿着纵向的有棱的无毛，粗糙的或短柔毛的很少，成熟时的小穗多少压扁，数枚到多数小花；在肥沃的小花下面脱节的小穗轴，在最重要的小花的内稃以外延长，在边面对小花上节间被变平或者凹。

Wheat physiological char acte rs show two stages by the dividing line of anthesis.In prophase,it mainly forms tillerings,differentiates the floscules and small heads,forms the base of heads number and grains number.In anaphase,it mainly accumulates effectively dry substance ,makes certain the grains number and grains weight ,so we can confirm the t hree yield factors,that is,heads number,grains number and grain weight.

在小麦生理性状的表现上以扬花期为分水岭分2个阶段，前期主要形成分蘖，分化小花、小穗，决定产量构成的亩穗数和穗粒数；后期表现干物质的有效积累，确定粒数、粒重，从而构成产量的三大因素：亩穗数、穗粒数和粒重。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失