VIII.On the Ovule ofEuphrasia officinalis
نویسندگان
چکیده
منابع مشابه
Regulation of ovule development.
Ovule development in Arabidopsis and other plants has been the focus of classic and molecular genetic analyses in recent years. This has been an exciting time to be involved in plant developmental biology, because many genetic pathways and regulatory mechanisms have been elucidated. Continued studies of ovule mutants have contributed to and benefited from these advances. Ovule development invol...
متن کاملThe Ovule and the Embryo Sac.
The plant life cycle is characterized by the alternation of generations between a diploid sporophyte and a haploid gametophyte. The sporophyte functions to produce spores, which then develop into gametophytes. The differentiated gametophytes in turn produce either the male gametes (sperm) or female gametes (egg cells). In contrast to lower plant species, in which the gametophyte is the dominant...
متن کاملCalendula officinalis
Calendula ,native to southwestern Asia, western Europe, Macaronesia, and the Mediterranean, is an annual and perennial herbaceous plants belongs to family Asteraceae . The aim of this study is to overview its pharmacological effects. This review article was carried out by searching studies in PubMed, Medline, Web of Science, and IranMedex databases up to 2016.totally, of 119 found articles, 40 ...
متن کاملOvule and embryo development, apomixis and fertilization.
Genetic analyses, particularly in Arabidopsis, have led to the identification of mutants that define different steps of ovule ontogeny, pollen stigma interaction, pollen tube growth, and fertilization. Isolation of the genes defined by these mutations promises to lead to a molecular understanding of these processes. Mutants have also been obtained in which processes that are normally triggered ...
متن کاملOvule abortion in Arabidopsis triggered by stress.
Environmental stresses frequently decrease plant fertility. In Arabidopsis, the effect of salt stress on reproduction was examined using plants grown in hydroponic medium. Salt stress inhibited microsporogenesis and stamen filament elongation. Because plants grown in hydroponic media can be rapidly and transiently stressed, the minimum inductive treatment to cause ovule abortion could be determ...
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ژورنال
عنوان ژورنال: Transactions of the Botanical Society of Edinburgh
سال: 1850
ISSN: 0374-6607
DOI: 10.1080/03746605009467568