礼节
发表于 2025-3-25 05:03:32
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过滤
发表于 2025-3-25 09:40:27
Religion in a Village SocietyWhether one should call the acclivity which became for a time the home of the Krobo people a hill or a mountain is a moot question. A high hill, a low mountain, there is no clear dividing line. The Krobo themselves apparently liked to speak of their mountain.
身体萌芽
发表于 2025-3-25 12:41:40
Attempted Pollen-mediated Transformation using Ti-plasmidsThere has been an increasing awareness that pollen is a desirable target for genetic transformation. This is because: 1) pollen is readily accessible as free cells in large numbers, and 2) pollen naturally gives rise to whole plants through the normal plant reproductive process.
insurgent
发表于 2025-3-25 19:44:39
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凝乳
发表于 2025-3-25 22:39:47
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高尔夫
发表于 2025-3-26 03:49:20
Male Gametophyte Response to High Temperature in MaizeGametophytic selection for important sporophytic traits such as resistence to environmental stresses and to pathogenic toxins has been proposed as a very efficient tool for the improvement of plant breeding methods., on the grounds of the existence of an extensive genetic overlap between the gametophytic and sporophytic phases..
Keratin
发表于 2025-3-26 08:15:28
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易碎
发表于 2025-3-26 09:02:26
Pollen Competitive Ability in Maize Selection and Single Gene AnalysisPollen competitive ability is one of the major components of gametophytic fitness; it depends mainly on germination time, tube growth rate and fertilization ability. The resulting gametophytic selection can produce significant evolutionary changes (1,2) and can be used to develop efficient methods of plant breeding (3,4,5).
流行
发表于 2025-3-26 14:40:51
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MONY
发表于 2025-3-26 19:41:32
Neue biotechnologische Ansätze in der KrebstherapieSeit der Aufklärung der DNA-Struktur 1955 durch Watson und Crick hat die Molekularbiologie und mit ihr die Biotechnik einen stürmischen Aufschwung genommen und unser Verständnis von Krankheiten und Pathogenese nachhaltig beeinflußt. Kaum ein Sektor der Medizin läßt sich heute aufzeigen, der nicht von dieser Entwicklung profitierte.