نتایج جستجو برای: early seedling growth

تعداد نتایج: 1455011  

1999
J. H. Miller

Intensive vegetation management alters seedling growth and development in southcm pine plantations. Adequate light, moisture. and nutrients stimulate seedling stem growth and crown development. Thus rapid stem growth could deplete nutrient and energy resources required for aggressive rcot growth. Early root system expansion within the available rooting zone is critical because structural root g...

2015
Mohamad Abbas Sophie Berckhan Daniel J. Rooney Daniel J. Gibbs Jorge Vicente Conde Cristina Sousa Correia George W. Bassel Nora Marín-de la Rosa José León David Alabadí Miguel A. Blázquez Michael J. Holdsworth

Successful emergence from the soil is essential for plant establishment in natural and farmed systems. It has been assumed that the absence of light in the soil is the preeminent signal perceived during early seedling development, leading to a distinct morphogenic plan (skotomorphogenesis) [1], characterized by traits providing an adaptive advantage until emergence and photomorphogenesis. These...

Journal: :Journal of nematology 1982
M G Bookbinder J R Bloom F L Lukezic

Meloidogyne hapla, Pratylenchus penetrans, and Helicotylenchus dihystera, reduced the growth of 'Saranac AR alfalfa seedlings when applied at concentrations of 50 nematodes per plant. All except P. penetrans reduced seedling growth when applied at 25 per seedling. M. hapla reduced growth when applied at 12 per seedling. Nematodes interacted with three pseudomonads to produce greater growth redu...

2017
Xiaoyu Zhi Yingchun Han Yabing Li Guoping Wang Lu Feng Beifang Yang Zhengyi Fan Yaping Lei Wenli Du Shuchun Mao

In this study, transplanting cotton seedlings grown in artificial substrate is considered due to recent increased interest in cotton planting labor saving approaches. The nursery methods used for growing cotton seedlings affect root growth. However, the underlying functional responses of root growth to variations in cotton seedling transplanting methods are poorly understood. We assessed the re...

حاج غنی, مهدیه , صفاری , مهری , مقصودی مود, علی اکبر ,

Soil salinity is an increasing environmental stress on crops in most areas of Iran since farmers use underground saline water for irrigation. In order to investigate the effects of salt stress on germination and seedling growth of safflower (Carthamus tinctorius L.), an experiment was conducted at two stages (germination seedling growth), using four levels of NaCl salinity (0, 5, 10, 15 ds/m), ...

2011
Guilan Gao Shengchun Zhang Chengfeng Wang Xiang Yang Yaqin Wang Xiaojun Su Jinju Du Chengwei Yang

The phytohormone abscisic acid (ABA) and the lipoxygenases (LOXs) pathway play important roles in seed germination and seedling growth and development. Here, we reported on the functional characterization of Arabidopsis CPR5 in the ABA signaling and LOX pathways. The cpr5 mutant was hypersensitive to ABA in the seed germination, cotyledon greening and root growth, whereas transgenic plants over...

2014
Jiangbao Xia Shuyong Zhang Tian Li Xia Liu Ronghua Zhang Guangcan Zhang

In order to investigate the change rules and response characteristics of growth status on each component of poplar seedling followed by continuous cropping generations and growth period, we clear the biomass distribution pattern of poplar seedling, adapt continuous cropping, and provide theoretical foundation and technical reference on cultivation management of poplar seedling, the first genera...

Journal: :Bioresource technology 2003
Kassahun Embaye Lars Christersson Stig Ledin Martin Weih

Seedling emergence and subsequent survival and growth are vital for natural forest restoration or plantation establishment by means of seeds. Such information is lacking for the African bamboo species. Two experiments were carried out in a greenhouse to evaluate the influence of seed orientation and sowing depth of the lowland bamboo Oxytenanthera abyssinica on seedling emergence, survival and ...

2011
Rozbeh Farhoudi

This experiment was carried out in Islamic Azad university (Shoushtar Branch) for investigate effect of salt stress on seedling growth of soybean cultivars. The soybean cultivars (Hill, Klark and Williams) obtained from Iran seed and plant institute, Karaj, Iran. The experimental design was 2 factorial, arranged in completely randomized design with 4 replication. First factor was soybean cultiv...

2005
Dennis Whigham Robert Simpson

WHIGHAII, D., and R. SIIIPSON. (Biol. Dept., Rider Coll., Lawrenceville, Ne:v Jersey 08648). Growth, mortality, and biomass partitioning in freshwater t idal wetlmd populations of wild rice (Zizania aquatica Tar. aquatica). Bull. Torrey Bot. Club 104: 347-351. 1977.-Wild rice is a common annual in Delaware River tidal ~retlands. Net production was as high as 20.9 g m" day-I and varied seasonall...

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