self-seed 中文意思是什麼
self-seed
解釋
自然播種-
Abstract : the main characters and seed set of bc1 ， bc2 ， bc1f2 from ms line back - crossing with the pollen of hybrid rice were studied. the appearance of a large number of self fertile plants in ms line was analyzed. the effect of introgression of restoring genes on ms line purity and hybrid yield in indica and japonica rice was discussed. it was pointed out that “ iso - cytoplasm restorer line ” was seriously reducing the purity of ms line and that hybrid rice was unsuitable for isolation zone in the seed production fields
文摘:研究了雜交稻花粉對母本不育系回交後代群體bc1 、 bc2 、 bc1f2的主要農藝性狀和育性表現，分析了不育系中出現大量自交結實株的原因，討論了恢復基因滲入對秈、粳不育系純度和雜交稻產量的影響，指出「同質恢」對降低不育系純度的嚴重性和雜交稻作制種田隔離區的不合理性。 -
The authors discovered four peculiar phenomena, i. e., the self seed - setting and its genetic stability of the autoteraploid rice, the early - generation stabilization in the cites between alloploid rices, the self embryogenesis of autoteraploid rice wider isolated conditions, and a high seed - setting percentage in some plants of autotetraploid rice after the treatment of ion beam, in the research of autotriploid and autotetraploid rices
在對同源三倍體水稻和同源四倍體水稻的研究中發現了值得注意的4種奇特現象，即同源三倍體水稻的結籽現象及其倍性的遺傳穩定性、在異倍性水稻間的雜交後代中早世代性狀穩定遺傳的現象、在隔離條件下同源四倍體的胚自發現象和離子束注入后同源四倍體水稻單株的高結實現象。 -
Improvement of seed setting percentage of cabbage self incompatibility line by spraying fertilizers in an ex - root way
根外追肥對提高甘藍自交不親和系結實率的效果 -
The self - poisoning effects of chinese fir plantation are studied through the seed germination experiment with the extracts of organs, bulk soils and rhizosphere soil of different rotation plantations. the results are as follows : there are some poisonous substances inhibiting germination of chinese fir seeds in soils of chinese fir plantations. the inhibiting effect becomes stronger and stronger with increase of planting generations. extracts from the organs of chinese fir trees also have some inhibiting effects on seed ' s germination, but the effect of leaf is the strongest. lower concentration extracts of underground vegetation may be favorable to the seed ' s germination whereas the higher concentration will reverse the results. it indicates that the “ self - poisoning ” effects of chinese fir plantations might be one of the reasons for poor natural regeneration and soil degradation of chinese fir plantation
利用不同栽植代數杉木人工林根際土、非根際土及杉木各器官浸提液進行杉木種子發芽試驗，研究杉木人工林自毒作用，研究結果表明：杉木林根際土及非根際土中均存在抑制杉木種子萌發的物質，隨栽植代數增加抑制作用更趨明顯；杉木各器官浸提液對杉木種子萌發也有抑制作用，其中以杉木葉的抑制作用最為明顯，杉木林下常見植物對杉木種子發芽則表現為低促高抑效應，說明杉木人工林存在自毒作用，這可能是杉木連栽障礙的原因之一。 -
Studies on breeding and seed reproduction technique of aijiaohuang self - incompatible line in non - heading chinese cabbage
大白菜自交不親和系小株采種高產技術 -
( 3 ) the value of p / 0 of c. praecox is 2847. 3 + 1125. 0, and the total value of oci is 3. with the above results, pollen germination rate and seed set rate, all shows that breeding system of c. praecox is facultative hybridization. the breeding system of c. nitens is similar to c. praecox, but it is higher in proportion of self - pollination than that of c. praecox
（ 3 ）蠟梅p / 0值為2847 . 3 1125 . 0 、 oci累計分值等於3 ，與不同處理的花粉萌發率和結實率的結果一樣，都顯示蠟梅繁育系統為兼性異交類型；亮葉蠟梅繁育系統同蠟梅相似，但亮葉蠟梅的自交比例相對較高 -
High - yield seed collecting technique of self - bred sterile line chinese cabbage
不結球白菜矮腳黃自交不親和系選育及繁種技術的研究 -
Seed collection should begin when seed on the most top of the spike sloughing, and go on for 3 days. biology population of this plant was research on clone and modular level, mainly discussed how density affect the population size and biomass, as well as the " - 3 / 2 self thinning " and the primary productions under different densities
從無性系構件和個體水平上進行了野大麥種群生物學方面的研究。主要討論了密度對種群數量和生物量的影響，對「 - 3 2 」自疏法則進行了討論，並從草地生產角度比較了不同密度種植區的草地凈第一性生產力。 -
Growing from self - sown or accidentally dropped seed. used of a cultivated plant or crop
自生的由自己落下或偶爾落下種子而長成的。用於種植物或莊稼 -
Based on this method, the integration of cad software and dem analyzing software was implemented for performance of agricultural machine ' s working parts by self - development, thereby an integrated analyzing and designing system was developed for precision seed metering devices of planters
在此基礎上實現了計算機輔助設計軟體與離散元法性能分析軟體的集成，由此開發出了一種播種機精密排種器的集成分析設計系統。
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