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Effects of gamma irradiation on shoot regeneration from leaf and bud growth in vitro of strawberry 1 The leaf was very sensitive to the gamma irradiation, and 'Toyonoka' was more sensitive than 'Akihime'. The LD50 (50% decrease of generation) of strawberry leaf was between 10 and 20 Gy. 2 Strawberry leaves were inoculated in vitro at 8 d-15 d after gamma rays irradiation, and the shoot regeneration rate from of 'Toyonoka' increased at 10 Gy and almost no difference from 20 Gy to 40 Gy. The positive effect dose for 'Akihime'.was from 10 Gy to 30 Gy, however, 40 Gy decreased shoot regeneration rate.

2.60Co γ辐射对不同品种草莓离体叶片再生及芽生长的影响 1）叶片对辐射敏感，叶片再生的半致死剂量为10 Gy-20 Gy，'丰香'品种比'章姬'品种敏感； 2）辐射后8 d-15 d接种，'丰香'叶片的不定芽再生率在剂量10 Gy呈上升趋势，而其他剂量则几乎未见有变化，'章姬'在剂量10 Gy-30 Gy，叶片的不定芽再生率提高较大，40 Gy仍表现轻微下降； 3）适宜的辐射剂量对草莓试管苗增殖有促进作用。

After pretreatment with TFP, although the conductance of cultivate solution of strawberry seedling under NaCl stress was not increased, growth was inhibited obviously by TFP, while the leaf relative electric conductivity in strawberry increased, leaf holding ability was reduced. The inhibiting response increased with the concentration of TFP increasing. On the contrary, conductance in cultivate solution was increased by Ca(NC?3)2 treatment, but the leaf relative electric condu

用Ca(NO_3)_2和TFP培养处理NaCl胁迫的草莓幼苗，发现TFP培养处理虽然不增加培养液的电导值，但明显抑制盐胁迫草莓幼苗的生长，增加了叶片膜透性，降低了叶片保水力，抑制作用随TFP浓度的增加而增大；而Ca(NO_3)_2处理虽然增加了培养液的电导值，但降低了幼苗叶片膜透性，提高了叶片保水力，因而减轻了NaCl

After pretreatment with Ca(NO3)2,W7 and TFP in improving and blocking Ca2+*CaM messenger system, membrane damage in strawberry leaf was relief by Ca(NO3)2treatment, at the meanwhile, salt damage index was reduced, the content of prolinc and chlorophyll were enhanced, Pn, EVAP and GS were improved, ABA content in root and leaf was reduced, the content of ZTJAA, GA and ZT/ABA were enhanced, the content of unaturated fatty acid increased, whereas, saturated fatty acid content in leaf and root was reduced, the rate between unaturated fatty acid and saturated fatty acid and index of unaturated fatty acid were enhanced.

在Ca(NO_3)_2、W7和TFP喷叶预处理促进或阻碍Ca~(2+)·CaM信使系统传导后，发现Ca(NO_3)_2处理能减轻叶片的膜伤害，降低盐害指数，增加脯氨酸含量和叶绿素含量，提高净光合速率、蒸腾速率、气孔导度，降低根系和叶片中的ABA含量，增加ZT、IAA和GA含量和ZT/ABA比值；提高叶片和根系中的UFA含量、U/S比值和IUFA，降低根系和叶片中的SFA含量。

Whith the increase of water supply,the biomass,tree height,total branch number and length,total leaf number and area,specific leaf area and fine root length increased,and root/shoot biomass,sclerophyllous characters and leaf succulence degree decreased.

随着施水量的增加，幼苗生物量、株高、总枝数和长度、总叶片数、总叶面积、比叶面积和细根长逐渐增大，而生物量根冠比、硬叶特征和叶肉质化程度逐渐减小。

These results suggest that leaf Na(superscript -) and Cl(superscript -) accunulations are the main factors affecting leaf succulence and leaf Na(superscript +) plays a critical role.

内地重盐碱地土壤表层和空气温度高，尤其土壤含水量低是内地盐地碱蓬叶片肉质化程度高于海边生境条件下的重要原因。

The main indictor examined were anatomical structrue ofleaves,movement and shedding of leaves,leaf water potential andwater saturation deficit,leaf succulence and specfic leaf area,rate of water loss,slope of water release curve.water parametersof PV curveψo、Vs、Va、Emax and TW/DW et al.

在人工气候室和温室条件下，控制不同土壤水势梯度，从苗木水分生理生态特点、耐旱生产力及存活能力等三个方面研究了1～3年生的油松、侧柏、栓皮栎、元宝枫、刺槐、白蜡、紫穗槐、沙棘和黄栌的耐旱特性及其机理。

The white square represents Canadian vast national territory, the Canadian very big area national territory whole year the snow time above 100 days, therefore expressed with the white; Two red vertical stroke rectangles represent the Pacific Ocean and Atlantic separately, because west Canada is close to the Pacific Ocean, east near Atlantic; The red maple leaf represents all Canada people, Canada is known as "country of the maple leaf" the fine reputation, the Chinese sweet gum is this country's country tree, the maple leaf is the Canadian nationality's symbol.

白色正方形代表加拿大辽阔的国土，加拿大很大面积的国土全年积雪期在100天以上，故用白色表示；两个红色竖长方形分别代表太平洋和大西洋，因加拿大西濒太平洋、东临大西洋；红枫叶代表全体加拿大人民，加拿大素有"枫叶之国"的美誉，枫树是该国的国树，枫叶是加拿大民族的象征。

Planting density, yield components, agronomic traits, leaf area index and group leaf area duration were analyzed in the study, the results showed that Xundan 20 had long trimness in high density. The high value of leaf areas kept over 60 days, and the effective illumination hours（PAR_Avg≥300mmol/s/m2）were over 780 hours in the whole developing stage.

结果表明：浚单20在高密度条件下维持了较高的整齐度，叶面积高值持续期达60d以上，整个玉米生育期内PAR_Avg≥300mmol/s/m2的有效光照时数达780h以上。

The feeding habits of the larva is more extensive, also eat to fresh leaf of the elm , mulberry leaf , the leaf of the general term for paulownia, phoenix tree and tung tree , blade of the legume besides the above food, and various kinds of corpse and jujube kernel of insect process piece produced to sift; When the food is scarce , can even bite food wooden raising case and paper , various kinds of grass one , blade ,etc.

幼虫的食性更为广泛，除以上食物外还吃鲜榆叶、桑叶、桐叶、豆科植物的叶片，以及各种昆虫的尸体和枣仁加工筛出的碎屑；当食物缺乏时，甚至还可咬食木质的饲养箱和纸片与各种草棵、叶片等。

It\'s possibly that increase of hydraulic limitation with tree height influenced leaf water potential and turgor as well as leaf structure,which strengthened hydraulic limitation on leaf gas exchange characteristics including photosynthesis and transpiration rate, resultantly influenced carbon assimilation and CO_2 fractionation and increased water use efficiency and drought resistance capability.

应该是水力限制影响了叶片的水势和膨压、同时造成叶片的结构发生改变，而结构的改变加剧了水力对气体交换的限制、影响了光合碳同化以及对CO_2的分馏效应、使叶片的水分利用效率和抗旱性增强。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。