نتایج جستجو برای: seed and 100 seeds weights

تعداد نتایج: 16899704  

Journal: :Bioscience, biotechnology, and biochemistry 2004
Katsumi Watanabe Naoko Nishida Takashi Adachi Motoko Ueda Toshio Mitsunaga Yukio Kawamura

Changes in the levels of thiamin-binding globulin and thiamin in wheat seeds during maturation and germination were studied. The thiamin-binding activity of the seed proteins increased with seed development after flowering. The thiamin content of the seeds also increased with development. Thiamin-binding activity decreased during seed germination. On the other hand, immunological analysis using...

Extended Abstract Introduction: Weeds, as the most important biological stress, reduce the efficiency of water use, waste of food, shading and secretion of toxic substances, leads to a 10 to 100 percent reduction in crop yields. The first step of the weed control understands the biology and life cycle of the weed particularly seed Eco physiological characteristics. Dormancy in weed seeds, incl...

ژورنال: علوم آب و خاک 2005
حمید رضا دری, , محمد کاظم رمضانی, , محمد حسن هادیزاده, , محمد رضا لک, ,

In orther to determine the critical period for weed control in the Chitti bean (Phaseolus vulgaris) line KS-21467 a field study was conducted at the Bean Research Station of Khomein by a randomized completele block design in 2001 and 2002. The treatments included weed free and weed infested period until 20, 28, 36 and 44 days after planting (DAP) with two weed free and weedy checks. The results...

2010
JAMES E. MCMURTREY

THE FIRST step in producing a satisfactory crop of tobacco is to use good seed that is true to type. The grower often can save his own seed to advantage, if he wants to. Before topping is done, he should go over the tobacco field carefully to pick out desirable seed plants. When he has decided on the ideal type of plant, he should select the plants that conform to this type for producing seed. ...

Journal: :علوم گیاهان زراعی ایران 0
مصطفی ولیزاده استاد، دانشکده کشاورزی دانشگاه تبریز فرزانه شریعتی دانشجوی کارشناسی ارشد دانشکده کشاورزی دانشگاه تبریز هوشنگ آلیاری استادیار دانشکده کشاورزی دانشگاه تبریز سجاد محرم نژاد دانشجوی کارشناسی ارشد دانشکده کشاورزی دانشگاه تبریز

in order to evaluate the genetic diversity of common bean (phaseolus vulgaris l.) and the relationships between studied characteristics with seed storage proteins, 60 genotypes with three colors (white, red and pinto bean) were studied using an augmented design with three blocks and four varieties as controls. the majority of studied traits were significantly different between large and small s...

H. Hamzehzarghan V. Rafiei Z. Banihashemi

ABSTRACT- The effects of inoculum density and temperature on the disease intensity of Phytophthoraparsiana on almond seedlings were investigated. Almond seeds (Rabie and Kaghazi cultivars) were placed in moist vermiculite at 4°C for 45 days. Germinated seeds were sown in a soil: sand mixture (2:1 v/v) and grown in greenhouse (18°C-25°C). One-month-old seedlings were transferred from the greenho...

Journal: :Annals of botany 2012
Martino Orrù Efisio Mattana Hugh W Pritchard Gianluigi Bacchetta

BACKGROUND AND AIMS The importance of thermal thresholds for predicting seed dormancy release and germination timing under the present climate conditions and simulated climate change scenarios was investigated. In particular, Vitis vinifera subsp. sylvestris was investigated in four Sardinian populations over the full altitudinal range of the species (from approx. 100 to 800 m a.s.l). METHODS...

Journal: :پژوهش های تولید گیاهی 0

priming is one of the seed enhancement methods that might be resulted in increased seed performance (germination and emergence). the objective of this research was to evaluate effect of priming on seed emergence and yield under wide ranges sowing dates in cotton. treatments were combinations of 6 sowing dates and 2 seed treatments (control and primed seeds). hydropriming method was used; seeds ...

Journal: :international journal of environmental research 0
w.s. tavares departamento de fitotecnia, universidade federal de viçosa, 36570-000, viçosa, minas gerais state, brazil m.f. souza-filho laboratório de entomologia econômica, instituto biológico, 13092-543, campinas, são paulo state, brazil e.l. araujo universidade federal rural do semi-árido, 59625-900, mossoró, rio grande do norte state, brazil j.e. serrão departamento de biologia geral, universidade federal de viçosa, 36570-000, viçosa, minas gerais state, brazil j.c. zanuncio departamento de biologia animal, universidade federal de viçosa, 36570-000, viçosa, minas gerais state, brazil

anastrepha bezzii (diptera: tephritidae) larvae are common inside fruits of sterculia chicha (malvaceae) in minas gerais state, brazil. the seed dormancy and attack by a. bezzii of the native species s.chicha can be detrimental to seed germination and thus the natural spread of this plant. the objectives of the current study were to compare ecological observations of a. bezzii and s. chicha in ...

2005
Andrés R. Schwember

Seed priming (controlled hydration followed by drying) is used to alleviate high temperature inhibition of germination and improve seedling emergence of lettuce (Lactuca sativa L.) and other species. However, seed priming can also reduce the longevity of seeds during dry storage. Alternative drying methods [i.e., slow drying or moisture content reduction (MCR) before drying] can extend seed lon...

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