Variations in the microsporogenesis of monosulcate palm pollen
نویسندگان
چکیده
منابع مشابه
Variation of microsporogenesis in monocots producing monosulcate pollen grains.
BACKGROUND AND AIMS Microsporogenesis leading to monosulcate pollen grains has already been described for a wide range of monocot species. However, a detailed study of additional callose deposition after the completion of the cleavage walls has been neglected so far. The study of additional callose deposition in monosulcate pollen grain has gained importance since a correlation between addition...
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The entire pollen life span is driven by polyamine (PA) homeostasis, achieved through fine regulation of their biosynthesis, oxidation, conjugation, compartmentalization, uptake, and release. The critical role of PAs, from microsporogenesis to pollen-pistil interaction during fertilization, is suggested by high and dynamic transcript levels of PA biosynthetic genes, as well as by the activities...
متن کاملMultiple developmental pathways leading to a single morph: monosulcate pollen (examples from the Asparagales).
BACKGROUND AND AIMS Early developmental events in microsporogenesis are known to play a role in pollen morphology: variation in cytokinesis type, cell wall formation, tetrad shape and aperture polarity are responsible for pollen aperture patterning. Despite the existence of other morphologies, monosulcate pollen is one of the most common aperture types in monocots, and is also considered as the...
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Background & aim: Estrogen and androgen deficiency in menopause leads to poor vulvovaginal blood flow, vaginal dryness, and dyspareunia which can reduce the quality of life among the women. In this regard, this study investigated the impact of date palm pollen capsules on vaginal lubrication and dyspareunia in postmenopausal women. Methods: The present triple-blinded, placebo-controlled clinica...
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چکیده یکی از مهمترین دغدغه های بزرگ جوامع بشری، از دیر باز تا کنون که ذهن پژوهشگران و متخصصان بهداشت روانی و اجتماعی و دولتها رابه خود مشغول داشته، مسأله ی بزهکاری می باشد. شناخت کامل پدیده ی بزهکاری و بزهکار، علل وعوامل سقوط یک انسان، چگونگی درمان وی و درنهایت پیشگیری ازبزهکاری ودریک کلام سالم سازی یک جامعه، رسالت عظیم، انسانی ومقدسی می باشد که با بررسی شخصیت مجرم یعنی[ انسانی که تحت شرای...
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ژورنال
عنوان ژورنال: Botanical Journal of the Linnean Society
سال: 2006
ISSN: 1095-8339,0024-4074
DOI: 10.1111/j.1095-8339.2006.00525.x