萌發后 的英文怎麼說
中文拼音 [méngfāhòu]
萌發后
英文
post-emergence-
At the earliest developmental stage of the myxomycetes, the un - nucleate amoeboid or swarm cells of all the species are similar to each other in the aspects of morphology, structure and habit
在孢子萌發后的最初發育階段中,所有黏菌的單核黏變形體和游動胞在形態、結構和習性等方面均相似。However, only did a few pollen germinate in inter - specific hybridization between cerasus fruticosa and c. avian and many pollen tubes are crosswise on stigma and couldn " t penetrated into style. although a few pollen tubes entered, they couldn " t continue to grow due to accumulation of callosity in pollen tubes. in view of above - mentioned results, the irregular growth of pollen was the main reason to cause the incompatibility of distant hybridization between cerasus fruticosa and c. avium
而草原櫻桃與歐洲甜櫻桃種間雜交授粉后花粉在柱頭上雖少量萌發,但花粉管在柱頭上橫向生長,或盤繞,扭曲不能伸入花柱;個別進入花柱的花粉管先端因沉積胼胝質而中途停止伸長未能進入子房到達胚珠,從而說明這種雜交授粉后花粉管的不正常行為是導致草原櫻桃與歐洲甜櫻桃遠緣雜交不親和的主要原因。Furthermore the expressions of all the genes in a representative sample were examed by the recently developed method of hybridization to cdna arrays. this was intended to strengthen the theoretical background for the screening of norway spruce genotypes with low lignin content. the calli of the transformed sublines a78 - 3, a78 - 4, a78 - 5 and the untransformed control a95 : 88 : 22 were successfully induced to form mature embryos from which plantlets were established
以轉基因亞系a78 - 3 、 a78 - 4 、 a78 - 5和未轉基因對照a95 : 88 : 22的細胞愈傷組織為實驗材料,以dkm和lp - m熟化培養基培養五周后,再以1 4sh萌發培養基培養四周,成功地誘導形成了胚胎,並再生成新的小植株,萌發成活率達到80 。In the first year, let tree peonies grow freely, many new buds will germinate. in the second year, when the new buds grow as high as 10cm, you can select several stronger buds as main stmes, other stems shall be cut off. every 2 years, you can select another one or two new buds as main stems, so that plants shape can develop and plim step by step
牡丹定植后,第一年任其生長,可在根頸外萌發出許多新芽俗稱土芽第二年春天時,待新芽長至10m左右時,可從中挑選幾個生長健壯充實分佈均勻者保留下來,作為主要枝幹俗稱定股,余者全部除掉。Many researches show, the environmental adaptable process of the xerophytecan be divided into two different stages. in the first stage, seeds sprout and fini - sh the adaptation xerophytic process ; in the second stage, xerophyte grows in arid condition by using natural water
前人大量研究工作表明,旱生植物對環境的需求,可劃分為兩個不同階段,前一階段始於種子萌發並逐漸形成適旱結構,后一階段是植物在乾旱條件下利用當地自然水源而生長。Spring went room hind to undertake weighing shears second year, every branch leaves 10 centimeters to have short section, reelection of every branch after bud keeps 2 branches, the others rod all is cut
次年春季出室后進行一次重剪,每個枝條留10厘米進行短截,萌發后每個枝條再選留2枝,其餘小枝均剪去。In this paper, observation was conducted on pollen germination and growth behavior in distant hybridization between cerasus fruticosa and c. avium and hybridization between varieties in c. fruticosa through fluorescent light system of microscope. the results showed that pollens could normally germinate and pollen tubes could reach ovary through style to completed fertilization in intraspecific hybridization in c. fruticosa. the average fruit - set rate was 27 %
通過對草原櫻桃與歐洲甜櫻桃種間遠緣雜交及草原櫻桃品種間雜交后花粉管行為的熒光觀察發現,草原櫻桃品種間雜交授粉后花粉在柱頭上能正常萌發生長,花粉管沿花柱到達胚珠完成受精過程,平均座果率為27 。Cupressus ) the pollen grains contain just two nuclei : a generative nucleus and a vegetative nucleus ( tube nucleus )
當花粉粒形成后,花粉粒壁上分佈有萌發孔,花粉管從萌發孔處向外突起形成管狀結構,生殖核轉入管中。From this point, this study frees from the traditional limit which focuses on adult plant only, putting the stress on studying the dynamic adaptive change of the structure and function of the sprout
本研究以此為出發點,擺脫傳統的對旱生植物成株研究的局限,側重研究旱生植物自種子萌發開始后約60天內的幼苗結構、功能的動態適應變化。A control program might involve early preplant tillage to encourage germination of the weed seeds, followed by shallow tillage prior to planting to kill the emerged weeds
這樣,在耕地前想辦法促使雜草萌發,隨后在播種前淺耕將其殺滅。Perennial grasses store enough carbohydrates in below ground organs for germination in spring or for regrowth after cutting
摘要多年生牧草在地下器官中貯藏的碳水化合物是春季萌發生長和刈牧后再生的物質基礎。After 1 year, the survival rates of seedlings planted in k. candel forest, avicennia marina forest and at bare tidal flat were 54. 7 %, 13. 7 % and 76. 0 %, respectively. insect and crab feeding were the main cause of lower survivorship of k. candel seedlings under a. marina forest. among the surviving k. candel seedlings, seedlings at bare tidal flat grew much better in terms of height, diameter, leaf production and biomass than did under the a. marina forest and k. candel forest
高鹽( 30 % 0一50 % 0 )影響桐花樹幼苗的萌發; o一30 % 0鹽度下桐花樹幼苗的凈光合速率、蒸騰速率和氣孔導度都表現為低鹽促進,高鹽抑制的變化趨勢;無鹽條件下幼苗的凈光合速率明顯低於5 ~加% 0鹽度:桐花樹胎生繁殖體脫離母樹后,在隨后的生長發育過程中表現為吸收累積鹽分的過程。During the late microspore stage, a big vacuole formed and the nucleus was forced to move to peripheral region
當小孢子被釋放出后,鈣顆粒開始特異性積累在正在形成的花粉外壁中,尤其在萌發孔的部位聚集了大量的鈣顆粒。When alfalfa were treated with aqueous extract from p. multisectum, the respiratory rate, activities of amylase and proteinase during seed germination and germination rate, root length, shoot height and fresh weight of seedlings were inhibited and this inhibition become stronger as the concentration of aqueous extract increased
經水浸液處理后的紫花苜蓿萌發種子呼吸速率、澱粉酶和蛋白酶活性受抑,種子萌發率及幼苗根長、苗高和鮮重下降,並隨處理濃度提高而降低。Sweetpotato pollens killed by u. v. didn ' t sprout ; 2. normal pollens sprouted ; 3. pollens of 5x mixed with recognition pollens attached and sprouted much ; 4. in the negative - cross, sweetpotato pollens attached and sprouted much on the stigma of 5x ; 5. in the possitive - cross without recognition pollen, 5x pollens few attached and sprouted ; 6. in the treatment of pgr ( twice ), globular - embryo observed on 15 days after pollination ; 7. ovule obtained by intercross germinated on the medium ; 8. plantlet from intercross ovule grew on the medium ; 9. seeds obtained by opening pollination ; 10. tubers of hybrids from 5x crossed by sweetpotatos for two generations
紫外線殺死的甘薯花粉在親和柱頭上不萌發; 2 .未經紫外線處理的甘薯花粉在柱頭上正常萌發; 3 .在蒙導花粉作用下,五倍體的花粉在甘薯柱頭上大量附著和萌發; 4 .反交組合甘薯花粉在五倍體柱頭上大量附著和萌發; 5 .正交組合無蒙導花粉時五倍體花粉少量附著和萌發; 6 .生長調節劑二次處理后,授粉后15天所見的球形胚; 7 .雜交胚珠在培養基上萌發; 8 .雜交胚珠培養成苗; 9 .放任授粉收獲的大量種子; 10 .五倍體與甘薯雜交兩代產生的後代群體的結薯性。The results showed that the vessel element did n ' t differentiate after the seeds had imbibied for 6 hours ; 6 hours after seeds germination, two loci ? ne below the middle portion of the cotyledon and the other in the lower portion of cotyledon - node zone ( cnz ) initiated the differentiation of vessel element simultaneously, then elongated towards the cotyledonary apex and hypocotyl - root region respectively ; eventually the two promoter loci began to interconnect through vessel elements
結果表明:種子吸漲6h ,未有導管分子的分化;種子萌發后6小時期間,自子葉中部偏下方和子葉節區下部的兩個位點同時啟動導管分子的分化,並分別向子葉葉尖和下胚軸-根的方向延伸;爾后,在發生兩個啟動位點之間發生導管分子的連接。( 3 ) the germination percentage of pollen was low, but the pollen of p. tricuspidata and p. quinquefolia could germinate on the surface of their stigmas, respectively. pollen tubes could grow into their styles
( 3 )地錦和五葉地錦的花粉萌發率較低,但人工輔助自交后,花粉可以在各自柱頭表面正常萌發,花粉管可伸入花柱中。The pollen taken away from the loquat trees is directly put into the ln after being dried, then take it out from the ln and calculate its germination proportion
將枇杷盛花期的花粉乾燥后直接液氮超低溫保存,取出后觀察其萌發率。When making crossing with p. tricuspidata and p. quinquefolia, most pollen could not germinate on the stigma. even if germinated, the pollen tubes showed some abnormity such as twinning, tip inflation and bursting. 2 ~ 48h after pollination, pollen tube was not founded in the style of mother parents
將地錦和五葉地錦進行雜交時,多數花粉粒不能在柱頭表面萌發,或者萌發后的花粉管呈現捲曲纏繞、先端膨大、破裂等異常表現,在授粉后2 48h的花柱中,未能觀察到花粉管。When the concentration is low, 0 - 6 mg / kg, the content of cadmium in the root of alfalfa is lower than in the stern and leaf, but two times higher than the forage hugiene standard of our country. when the concentration is higher than 10mg / kg, the content of cadmium in the root is 20 times higher than the standard, but the content of cadmium in the soil decreased obviously, so alfalfa of this condition is the best alternative for renovating polluted soil. when 200mg / kg znic is added, the poison of cadmium is decreased dramatically with the grow time increasing, the cadmium effect on living number decreased
盆栽試驗中鎘對紫花苜蓿的出苗率、根、莖的生物量的影響與種子的萌發呈現同一規律;鎘在紫花苜蓿體內的含量也與土壤中鎘濃度有關:低濃度0 ? 6mg kg時,紫花苜蓿根部的鎘含量低於莖、葉中的鎘含量,但己超出我國飼料衛生標準2倍,濃度大於10mg / kg時,根部的鎘含量比飼料衛生標準高出20倍,而土壤中鎘含量大大降低,所以此時的紫花苜蓿是修復鎘污染土壤的較好的植物;當加200mg kg鋅后,鎘的毒害作用明顯減小,隨著生長時間的增長,生物量受鎘的影響也在減小,同時紫花苜蓿體內的鎘含量大幅度降低,有些己降到飼料標準以下。分享友人