Seed viability changes during fruit ripening of Juniperus polycarpos: Implications for seed collection
نویسندگان
چکیده
منابع مشابه
Interaction between juniper Juniperus communis L. and its fruit pest insects: Pest abundance, fruit characteristics and seed viability
The relationships between the fruit features of Juniperus communis and the presence of fruit pests were studied in Sierra Nevada, SE Spain. The abundance of two insect species a pulp-sucking scale and a seed-predator wasp was surveyed with respect both to fruit characteristics and to viability of seeds contained therein. Seed-predator pressure was not significantly related to any fruit characte...
متن کاملFruit size in wild olives: implications for avian seed dispersal
Frugivorous birds in the Mediterranean basin may disperse seeds using two different feeding behaviours: swallowing the fruit whole or pecking pieces of pulp. Swallowing is the common behaviour of frugivorous seed dispersers in the Mediterranean basin (Herrera 1984a) and most of the fleshy-fruited plants in the region rely on this bird feeding behaviour to disperse their seeds (Herrera 1984b, 19...
متن کاملNegative effects of temperature and atmospheric depositions on the seed viability of common juniper (Juniperus communis).
BACKGROUND AND AIMS Environmental change is increasingly impacting ecosystems worldwide. However, our knowledge about the interacting effects of various drivers of global change on sexual reproduction of plants, one of their key mechanisms to cope with change, is limited. This study examines populations of poorly regenerating and threatened common juniper (Juniperus communis) to determine the i...
متن کاملChanges of Seed Germination during the Year
It is possible to conclude that typical course of graph which analyse course of germinability during the year at every cultivar is observable. Germination usually shows a minimum in December, but mainly in January and in February. Maximum of germinability is observed in the spring and summer time. This phenomenon isn’t result of the dormancy or secondary dormancy because during of long term see...
متن کاملChanges in Soluble Carbohydrates during Seed Storage1
The soluble sugars present in the maize (Zea mays L.) embryo may serve as important components of protection or may contnbute to the deteriorative changes occurring during seed storage. Examination of the changes in sugars during accelerated aging of maize seeds indicates that the decline in vigor is associated with a marked decline in monosaccharides and in raffinose. Sucrose content remains r...
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ژورنال
عنوان ژورنال: Egyptian Journal of Botany
سال: 2018
ISSN: 2357-0350
DOI: 10.21608/ejbo.2018.2339.1141