نتایج جستجو برای: waterlogging

تعداد نتایج: 1026  

2011
Md. Alamgir Hossain Nasir Uddin

Waterlogging is a widespread limiting factor for wheat production throughout the world specially irrigated and high rainfall environments. The important biological consequence of waterlogging is the deficiency (hypoxia) or complete absence (anoxia) of oxygen in soil environment which restricts the growth, development and finally yield in wheat. The tolerant genotypes of wheat can adapt to trans...

Journal: :تحقیقات آب و خاک ایران 0
سمانه حبیبی دانشجوی کارشناسی ارشد زراعت دانشکدة کشاورزی دانشگاه شهید چمران اهواز معصومه فرزانه استادیار گروه زراعت ـ فیزیولوژی علف های هرز دانشکدة کشاورزی دانشگاه شهید چمران اهواز موسی مسکرباشی دانشیار گروه زراعت دانشکدة کشاورزی دانشگاه شهید چمران اهواز

in this research, catalase activity and leaf chlorophyll stability of satsuma mandarin on some citrus rootstocks under waterlogging condition were studied. experiment was conducted as factorial with randomized complete blocks and 6 replications. the first factor, include 7 soils from east mazandaran and the second factor included 7 different citrus rootstocks: 1. sour orange, 2. swingle citrome...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2008
I A Silva M A Batalha

Whether the functional structure of ecological communities is deterministic or historically contingent is still quite controversial. However, recent experimental tests did not find effects of species composition variation on trait convergence and therefore the environmental constraints should play the major role on community convergence into functional groups. Seasonal cerrados are characterize...

2017
Christine Stone Kathryn Chestnut Trent Penman Doland Nichols

The lerp-forming psyllid, Creiis lituratus Froggatt, is the most damaging pest of Eucalyptus dunnii Maiden plantations growing in north-eastern New South Wales. During the past 10 years there have been numerous reports that stands of E. dunnii planted on low-lying areas that were prone to waterlogging were also prone to infestation by C. lituratus. The objective of this shadehouse study was to ...

2013
Fanrong Zeng Lana Shabala Meixue Zhou Guoping Zhang Sergey Shabala

Salinity and waterlogging are two major factors affecting crop production around the world and often occur together (e.g., salt brought to the surface by rising water tables). While the physiological and molecular mechanisms of plant responses to each of these environmental constraints are studied in detail, the mechanisms underlying plant tolerance to their combined stress are much less unders...

2017
Muhammad B. Gill Fanrong Zeng Lana Shabala Guoping Zhang Yun Fan Sergey Shabala Meixue Zhou

Waterlogging and salinity are two major abiotic stresses that hamper crop production world-wide resulting in multibillion losses. Plant abiotic stress tolerance is conferred by many interrelated mechanisms. Amongst these, the cell's ability to maintain membrane potential (MP) is considered to be amongst the most crucial traits, a positive relationship between the ability of plants to maintain h...

2012
P. D. GADGIL

Radiata pine (Pinus radiata D. Don) and Douglas fir (Pseudotsuga menziesii (Mirb.) Franco.) seedlings were subjected to waterlogging periods of 1, 2, 4, 3, and 16 weeks. Phosphorus-32 uptake and succinic dehydrogenase activity of waterlogged mycorrhizas were measured and compared with non-waterlogged mycorrhizas. After 2 weeks of waterlogging Douglas fir mycorrhizas absorbed less P than control...

Journal: :به زراعی کشاورزی 0
علی اسدی کنگرشاهی دانشجوی دکتری علوم خاک، دانشکدۀ مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران غلامرضا ثواقبی استاد بخش علوم خاک، دانشکدۀ مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران. محمود سمر استادیار مؤسسة تحقیقات خاک و آب کشور محسن فرحبخش استادیار بخش علوم خاک، دانشکدۀ مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران

changes in chlorophyll florescence is one of the physiological responses of plants to waterlogging stress. due to easily measured in field and its inexpensive and non-destructive characteristics, it is one of the best ways to assess different genotypes tolerance to stresses. in this experiment, trends of chlorophyll fluorescence index (fv/fm) of ‘satsuma’ mandarin (citrus unshiu) on seven roots...

Journal: :پژوهش های تولید گیاهی 0
فاطمه رسولی دانشجو سرالله گالشی استاد راهنما همت الله پیردشتی مشاور ابراهیم زینلی مشاور

in order to investigation of waterlogging stress effects on morphological and physiological traits of rapeseed in different developmental stages, a pot experiment was conducted at gorgan university of agricultural sciences and natural resources during 2010-2011. the experiment design was completely randomized with factorial arrangement and three replications. examined factors were developmental...

2007
P. B. Catlin

Screening for tolerance of additional seedling types was continued on a reduced scale. J. nigra seedlings from 3 sources were no different than those of J. hindsii. ~. californica seedlings (1 source) had slightly greater average tolerance than those of J. hindsii. Single comparisons indicated no difference between J. honorei and J. hindsii and only a suggestion that 11anregian seedlings (1 sou...

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