نتایج جستجو برای: hard seed coat
تعداد نتایج: 239663 فیلتر نتایج به سال:
The origin of the agriculture was one of the turning points in human history, and a central part of this was the evolution of new plant forms, domesticated crops. Seed dispersal and germination are two key traits which have been selected to facilitate cultivation and harvesting of crops. The objective of this study was to analyze anatomical structure of seed coat and pod, identify metabolic com...
Arabidopsis seed coat epidermal cells produce a large quantity of mucilage that is extruded upon exposure to water. Chemical analyses and cell biological techniques suggest that this mucilage represents a specialized type of secondary cell wall composed primarily of pectin with lesser amounts of cellulose and xyloglucan. Once extruded, the mucilage capsule has a distinctive structure with an ou...
The seed stage is often critical in determining the regeneration success of plants. Seeds must survive an array of seed predators and pathogens and germinate under conditions favourable for seedling establishment. To maximise recruitment success plants protect seeds using a diverse set of chemical and physical defences. However, the relationship between these defence classes, and their associat...
چکیده ندارد.
Seed coat crude extracts of white-coloured ITA-256, white and brown-coloured TVS-716, deep brown-coloured IT-90K and light brown-coloured Ife brown cowpea varieties were analyzed for the presence and amount of total phenol, tannin and flavonoid content. Crude extracts of the cowpea varieties were analyzed for antioxidant activity using the Thiobarbituric Acid (TBA) assay. The seed coat extracts...
A spontaneous mutant with natural seed-coat cracking, designated "cracked seed-coat mutant (CSM)," was identified in chickpea (Cicer arietinum L.) from an F(2) population of a cross ICRISAT chickpea (ICC) 10301 × ICC 12430. The extent of seed-coat cracking (SCC) varied widely from a minute to several wide cracks. Seed coats showed cracks before seeds were fully developed and the plants had reac...
seed coat crude extracts of white-coloured ita-256, white and brown-coloured tvs-716, deep brown-coloured it-90k and light brown-coloured ife brown cowpea varieties were analyzed for the presence and amount of total phenol, tannin and flavonoid content. crude extracts of the cowpea varieties were analyzed for antioxidant activity using the thiobarbituric acid (tba) assay. the seed coat extracts...
BACKGROUND Determining the distances over which seeds are dispersed is a crucial component for examining spatial patterns of seed dispersal and their consequences for plant reproductive success and population structure. However, following the fate of individual seeds after removal from the source tree till deposition at a distant place is generally extremely difficult. Here we provide a compari...
Changes in the nature of the seed coat caused by gut passage are considered to be the proximate causes of changes in germination patterns. Modifications of seed coat permeability may be decisive in saline environments (e.g. Mediterranean wetlands), in which the response of the seed to osmotic stress, or its resistance to toxicity caused by some ions may be affected. We analysed how passage thro...
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