反枝苋

目的：通过观察黄单胞菌L4毒素对反枝苋线粒体、细胞壁和表皮气孔叶片细胞的影响来探讨毒素的作用机理。

Objective : To observe effects of Xanthomonas L4 phytotoxin on mitochondrial , stoma and cell wall in order to study the mechanism of herbicide .

狗尾草出苗最适深度为1～3cm，反枝苋为2cm。

The most suitable depth in soil for easy germination was 1 ~ 3 cm for the green bristlegrass , and 2 cm for the redroot amaranth .

种子萌发抑制试验结果表明，F-8菌株的培养滤液不仅对反枝苋、稗草、狗尾草种子萌发有很强的抑制作用，而且对它们的根、茎生长抑制也很强；

Were tested in this paper . Seed germination experiment showed that the culture filtrate from isolate F 8 strongly inhibited seed germination , root and stem growth of all three weeds used .

小麦提取物对反枝苋、繁缕生长的化感效应研究

Allelopathy of wheat extraction to the growth of two weeds

增强紫外-B对反枝苋的形态、生理及异速生长的影响

Effects of enhanced UV-B radiation on morphology , physiology and allometry of Amaranthus retroflexus

田间小区试验结果表明，伴地农单用对春玉米田的藜、本氏蓼、反枝苋、龙葵等一年生阔叶杂草有良好防效。

This trial result showed that bromoxynil could effectively control broadleaf weeds in spring corn field .

非休眠的马唐和反枝苋种子在土层中不适合萌发条件时，可进入二次休眠，其种子内的不同植物激素含量发生改变。

Retroflexus were placed in soil where conditions were not suitable for their germination , they became the second dormancy .

可见反枝苋的适应生长型极大地取决于光环境，即邻体间的拥挤程度（光竞争）。

Adaptative plant form greatly depends on light environment , which is the degree of crowding by neighbours ( competition for light ) .

降低营养或光照强度，反枝苋的株高、冠幅、分枝长、分枝数等结构特性减小，降低密度，则表现出增大。

Plant height , width , branch number and branch length decreased with decreasing light and nutrient , but increased with decreasing density .

本试验以果园杂草马唐、金狗尾、反枝苋、苘麻、藜的种子为试材，研究了多效唑对杂草种子发芽的影响；

The effects of paclobutrazol on the germination of crab-grass , green amaranth , golden foxtail , stamp weed and bacon weed seeds was studied .

说明在入侵过程中，反枝苋可以通过调节自身的化感作用和生物量分配来适应不同的氮素营养条件。

These results suggested that the A.retroflexus during its invasion could adjust its allelopathic potential and biomass allocation to adapt different levels of nitrogen nutrition .

当对光的竞争增强时，反枝苋通常具有较强的顶端优势，增加直立生长的能力，以减小邻体的遮挡。

As competition for light increases , there should generally be an increasing premium on vertical growth through stronger apical dominance to minimize shading by neighbours .

反枝苋种子埋藏三年半时间基本失去发芽能力，狗尾草埋藏五年后仍有10%的种子具有发芽能力。

Within three years , 10 % of the green bristlegrass seeds in the soil still had the ability of germination while no seeds of the redroot amaranth survived .

山东省生姜主要产区杂草差异性不大，主要为马唐、牛筋草、反枝苋、马齿苋、香附子。

There is no obvious difference among shandong main ginger production areas , the main weeds are : Common crabgrass 、 Goosegrass 、 Redroot amaranth 、 Purslane 、 Rice galingale .

这两种杂草出土的土壤含水量极限点是20%，马唐适宜水分是80%，反枝苋适宜水分是60%。

The lowest soil water content for the emergence of both weed species was 20 % . The suitable soil water content was 80 % for D. sanguinalis and 60 % for A.

提取物对受体植物的幼苗鲜重均有不同程度的影响，虎尾草、匍匐翦股颖、巴哈雀稗、反枝苋和多变小冠花幼苗鲜重明显降低，与对照差异达显著水平（P<0.05）。

Alfalfa leaf extract effeced the fresh weight of showy chloris , stolon-bearing bent grass , bahia grass , redroot amaranth and crown vetch , they were lighter than control ( P < 0.05 ) .

提取物对稗草、狗尾草、高羊茅、毛马唐和多变小冠花的苗长具有促进作用，与对照差异均显著（P<0.05）；反枝苋的苗长则受到抑制（P<0.05）；

The leaf extract promoted the seedling growth of 5 plants ( P < 0.05 ), including barnyard grass , green bristle grass , tall fescue , hairy crabgrass and crown vetch , only redroot amaranth was inhibited by the extract .

离子交换液对反枝苋的种子萌发抑制率为42.9%，主根生长抑制率为93.1%，主茎生长抑制率为86.2%。

Exchange liquor had an inhibition of 93.1 % to taproot , an inhibition of 86.2 % to caulis and an inhibition of 42.9 % to bourgeon . Eight fractions were isolated from the fermentation products of No. 24 strain by Pre-HPLC .

2003-2005年期间，通过野外受控实验，得出以下结论：（1）反枝苋响应不同的光、营养和密度条件，表现出很强的形态可塑性。

Six main conclusions could be obtained from the field experiments conducted during the years from 2003 to 2005 and they were as follow : ( 1 ) Amaranthus retroflexus show high morphologic plasticity in response to different light , nutrient and density .

结果表明，中国粗榧枝叶的除草活性成分集中在生物碱部分与苯提取物中，当供试浓度为10mg/ml时，两者对高梁、黑麦草、反枝苋种子的根茎生长抑制率均大于90%。

The results showed that the herbicidal active ingredients mainly existed in chlorin extract and benzene extract because the inhibitory rates of both against young roots and young buds to Sorghum vulgar , Amaranthus paniculatus and Amaranthus retroflexus were more than 90 % under the concentration of 10mg / ml.