نتایج جستجو برای: megaspore
تعداد نتایج: 107 فیلتر نتایج به سال:
Variation in somatic and gametic chromosome numbers in Ribes nipuw (Vaarama 1949) and Eruca sativa (Rajan et al., 1950) has been attributed to the formation of accessory spindle and subsequent "elimination of clzrolnosoines e n bloc". In sugarcane, Parthasarathy (1951)~ after exa~nining the slides of megasporogenesis in Co. 421 prepared by Subrainaniam (1946), concluded that the mechanism of el...
Germ-line specification is essential for sexual reproduction. In the ovules of most flowering plants, only a single hypodermal cell enlarges and differentiates into a megaspore mother cell (MMC), the founder cell of the female germ-line lineage. The molecular mechanisms restricting MMC specification to a single cell remain elusive. We show that the Arabidopsis transcription factor WRKY28 is exc...
In eukaryotes, coat protein complex II (COPII) vesicles mediate anterograde traffic from the endoplasmic reticulum to Golgi apparatus. Compared yeasts, plants have multiple COPII proteins; however, functional diversity among them is less well understood. SEC31A and SEC31B are outer proteins found in Arabidopsis. this study, we explored function of compared it with that various perspectives. was...
Meiosis is a central feature in the reproductive program of plants and all other sexually reproducing eukaryotes. In plants such as Arabidopsis thaliana, reproduction initiates during the development of the male (anther) and female (ovule) reproductive structures from somatic tissue. During anther development, a group of cells differentiate to form archesporial cells, which in turn give rise to...
On Christmas Day 1941,GENETICS received a gift: amanuscript from Marcus Rhoades describing an unexpected violation ofMendelian inheritance inmaize. This was the first report of preferential segregation; a phenomenon later known as meiotic drive. Rhoades was studying a variant form of chromosome 10 with a conspicuous abnormality; it carried extensive heterochromatin at the tip of the long arm. T...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید