Seed conditioning of red oak: a recalcitrant North American seed
نویسندگان
چکیده
منابع مشابه
North American Seed-harvester Ants
■ Abstract Seed-harvester ants are a dominant and conspicuous insect group throughout arid portions of the southwestern United States and northern Mexico, and they include ∼75 species. Intense study in the late 1970s and early 1980s led to the paradigm that interspecific competition for limited seed resources is the primary factor that structures seed-harvester ant communities. This review atte...
متن کاملSeed-crop size and eruptions of North American boreal seed-eating birds
1. Eruptions occur when a species appears in unusually high densities within and often outside of its normal range. We used 30 years of Christmas Bird Counts combined with cone/seed-crop data on boreal coniferous trees, breeding bird surveys, and weather records to test correlates of winter eruptions by 11 species of primarily boreal North American seed-eating birds. 2. Eruptions of six species...
متن کاملSeed removal in two coexisting oak species: ecological consequences of seed size, plant cover and seed-drop timing
I. M. Pérez-Ramos ([email protected]), I. R. Urbieta, and T. Marañón, IRNAS, CSIC, P.O. Box 1052, ES-41080 Sevilla, Spain. Present address for IMPR: Centre d’Ecologie Fonctionnelle et Evolutive, CNRS, 1919 Route de Mende, FR-34293 Montpellier 5, France. M. A. Zavala and present address for IRU: Depto de Ecologı́a, Edificio de Ciencias, Univ. de Alcalá, Alcalá de Henares, ES-28871 ...
متن کاملPhenotypic Diversity for Seed Mineral Concentration in North American Dry Bean Germplasm of Middle American Ancestry
Dry bean (Phaseolus vulgaris L.) seeds are a major protein, carbohydrate, and mineral source in the human diet of peoples in multiple regions of the world. Seed mineral biofortification is an ongoing objective to improve this important food source. The objective of this research was to assess the seed mineral concentration of five macroelements and eight microelements in a large panel (n = 277)...
متن کاملeffect of seed priming and irrigation regimes on yield,yield components and quality of safflowers cultivars
این مطالعه در سال 1386-87 در آزمایشگاه و مزرعه پژوهشی دانشگاه صنعتی اصفهان به منظور تعیین مناسب ترین تیمار بذری و ارزیابی اثر پرایمینگ بر روی سه رقم گلرنگ تحت سه رژیم آبیاری انجام گرفت. برخی از مطالعات اثرات سودمند پرایمینگ بذر را بر روی گیاهان مختلف بررسی کرده اند اما در حال حاضر اطلاعات کمی در مورد خصوصیات مربوط به جوانه زنی، مراحل نموی، عملکرد و خصوصیات کمی و کیفی بذور تیمار شده ژنوتیپ های م...
ذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Scientia Agricola
سال: 1998
ISSN: 0103-9016
DOI: 10.1590/s0103-90161998000500012