نتایج جستجو برای: ovule development
تعداد نتایج: 1416363 فیلتر نتایج به سال:
Involvement of CUP-SHAPED COTYLEDON Genes in Gynoecium and Ovule Development in Arabidopsis thaliana
In animals, early embryonic development is largely dependent on maternal transcripts synthesized during gametogenesis. Recent data in plants also suggest maternal control over early seed development, but the actual timing of zygotic genome activation is unclear. Here, we analyzed the timing of the maternal-to-zygotic transition during early Zea mays seed development. We show that for 16 genes e...
Pinus sibirica and P. pumila hybrid zone have a vast territory. Previously, seed production was determined only in hybrids from the western part of zone. The earlier established introgression species northeastern gives more relevance to study this area. paper presents results cone structure analysis Siberian stone pine, dwarf pine their hybrids, also shows dynamics ovule development into filled...
BACKGROUND AND AIMS Resource allocation to flowers, fruits and seeds can vary greatly within an inflorescence. For example, distal fruits are often smaller and produce fewer and smaller fruits and seeds than more basal fruits. To assess the causes and functional significance of intra-inflorescence variation, pollen and resources were manipulated to test whether such patterns could be altered wi...
The life cycle of flowering plants alternates between a predominant sporophytic (diploid) and an ephemeral gametophytic (haploid) generation that only occurs in reproductive organs. In Arabidopsis thaliana, the female gametophyte is deeply embedded within the ovule, complicating the study of the genetic and molecular interactions involved in the sporophytic to gametophytic transition. Massively...
Background and purpose: Oxidative stress is amongst the factors that change the parameters of sperm and embryo development. This study investigated the protective effects of vitamin E on sperm parameters and In Vitro Fertilization (IVF). Materials and methods: In the present study, male mice were divided into four groups to recieve physiological saline (control group), PHZ, vitamin E +PHZ, and...
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