effect of temperature on germination and cardinal temperatures for upper d and lower set up seeds of (rapistrum rugosum.)

Authors

سیامک فولادی

مرتضی گلدانی

رضا قربانی

محمد کافی

abstract

in order to determine cardinal temperatures and some germination characteristics for type one seed (upper segment) and type two seed (lower segment) of rapistrum rugosum, an experiment was conducted on two type seed and10 levels of temperatures (3, 5, 10, 15, 20, 25, 30, 35, 40 and 45 °c) in completely randomized design with four replications in factorial experimental arrangement in weeds research laboratory, faculty of agriculture, ferdowsi university of mashhad in 2012. results indicated that the cardinal temperatures for type one seed (min, opt and max) were 0.7, 35.8 and 45.4c° and for type two seed were 1.3, 31.7 and 48.5, respectively. the highest germination percentage for type one seed (upper segment) was in temperature range 10-35°c and for type two (lower segment) was in 5-35°c. germination percentage in type two seed (81%) was more than type one (41%). there was significant different between length of plumule and radical of type one and two seed in 10°c (p≤0.05). as length of plumule and radical of type one was more than type two seed.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Effect of Temperature and Light on Germination Characteristics of Japanese Morning Glory (Ipomoea nil): Determination of Cardinal Temperatures of Germination

DOR: 98.1000/2383-1251.1398.6.115.11.1.1575.1610 Extended Abstract Introduction: In recent years, Japanese morning glory has been recognized as a new weed in some soybean cultivation areas in the Province of Golestan. Japanese morning glory, an annual herbaceous plant, belongs to Convolvulaceae family. Germination is the first step in the competitiveness of a weed in an ecological niche. ...

full text

effect 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...

Estimating the cardinal temperatures of germination for Ipomoea hederaceae and Cleome viscosa at constant and alternating temperature conditions

Extended abstract: Introduction: Reports indicate the invasion of two species of Ivy-leaved morning-glory (Ipomoea hederaceae Jacq) and Asian spider flower (Cleome viscosa L.) to summer crops fields such as soybeans in Golestan province. Considering the importance of knowing the cardinal temperatures of germination in the models for predicting the presence of weeds and consequently designing c...

full text

the effect of task complexity on lexical complexity and grammatical accuracy of efl learners’ argumentative writing

بر اساس فرضیه شناخت رابینسون (2001 و 2003 و 2005) و مدل ظرفیت توجه محدود اسکهان (1998)، این تحقیق تاثیر پیچیدگی تکلیف را بر پیچیدگی واژگان و صحت گرامری نوشتار مباحثه ای 60 نفر از دانشجویان زبان انگلیسی بررسی کرد. میزان پیچیدگی تکلیف از طریق فاکتورهای پراکندگی-منابع تعیین شد. همه ی شرکت کنندگان به صورت نیمه تصادفی به یکی از سه گروه: (1) گروه موضوع، (2) گروه موضوع + اندیشه و (3) گروه موضوع + اندی...

15 صفحه اول

My Resources

Save resource for easier access later


Journal title:
حفاظت گیاهان

جلد ۲۹، شماره ۱، صفحات ۷۲-۰

Keywords

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023