flower seed Articles
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Habitat-specific responses in the flowering phenology and seed set of alpine plants to climate variation: implications for global-change impacts
The timing of the snowmelt is a crucial factor in determining the phenological schedule of alpine plants. A long-term monitoring of snowmelt regimes in a Japanese alpine area revealed that the onset of the snowmelt season has been accelerated during the last 17 years in early snowmelt sites but that such a trend has not been detected in late snowmelt sites. This indicates that the global warming ...
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Enhancement of salt tolerance in transgenic rice expressing an Escherichia coli catalase gene, kat E
Rice (Oryza sativa) is sensitive to salt stresses and cannot survive under low salt conditions, such as 50 mM NaCl. In an attempt to improve salt tolerance of rice, we introduced katE, a catalase gene of Escherichia coli, into japonica rice cultivar, Nipponbare. The resultant transgenic rice plants constitutively expressing katE were able to grow for more than 14 days in the presence of 250 mM ...
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Conservation versus conventional tillage on performance of three different crops
Conservation tillage, besides being more economical, prevents soil erosion and has other beneficial effects on our environment, but few studies have been conducted on differential responses of different crops to conservation tillage. The main objective of this study was to examine the interaction of tillage with crop species. Rainfed field experiments in a strip-plot design with four replicates ...
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Plant growth regulator effects on balancing vegetative and reproductive phases in alfalfa seed yield
The use of plant growth regulators (PGRs) has opened new prospects for increased seed production in grasses and legumes, but little information is available on the effects of PGRs on alfalfa (Medicago sativa L.) seed production. This study was conducted to evaluate the effects of applying chlormequat chloride (CCC) (2-chloroethyl-trimethyl-ammonium chloride) in combination with five PGRs ...
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Efficacy of herbicide seed treatments for controlling striga infestation of sorghum
Witchweed (Striga spp.) infestations are the greatest obstacle to sorghum [Sorghum bicolor (L.) Moench] grain production in many areas in Africa. The objective of this study was to evaluate the efficacy of herbicide seed treatments for controlling Striga infestation of sorghum. Seeds of an acetolactate synthase (ALS) herbicide–tolerant sorghum hybrid were treated with two ALS-inhibiting ...
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How to increase yield by optimizing spring growth
Spring is the period when winter rapeseed plants are speeding up their development. All the activities are increasing: biomass accumulation, leaf area development, photosynthesis. To support the intensification, necessary to maximize the number of seeds and therefore the yield, the plant has to uptake big amounts of nutrients. ...
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Tree, Crop & Plant Stress – A Primer on Abiotic and Biotic Stressors
The natural conditions in which plants and trees grow are neither uniform nor controlled. Many changes or fluctuations, even if they are temporary, can have a negative impact on and stress plants. The factors which can lead to stress can be one of two types: abiotic or biotic. Stress can have serious repercussions on various phases of a plant’s growth and, ultimately, crop productivity. ...
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Tree, crop & plant stress – A primer on abiotic and biotic stressors
The natural conditions in which plants and trees grow are neither uniform nor controlled. Many changes or fluctuations, even if they are temporary, can have a negative impact on and stress plants. The factors which can lead to stress can be one of two types: abiotic or biotic. Stress can have serious repercussions on various phases of a plant’s growth and, ultimately, crop productivity. ...
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Grow to Order and Seed Collection
Local provenance planting is important to help restore our natural habitats and retain the genetic integrity of plant populations and is strongly recommended for projects within or near environmentally sensitive areas. Forward planning is essential when undertaking local provenance seed collection as there are seasonal constraints such as seed maturation time, finding seed donor sites and gaining ...
By BritishFlora
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Methyl bromide as a fumigant for International transports
Methyl bromide is a is an odourless, colourlessgas most often used as a fumigant. About 70% of methylbromide produced in the United States goes into pesticidal formulations. It has been used to fumigate agricultural commodities, grain elevators, mills, ships, clothes, furniture greenhouses and delicate works of art. Non-pesticidal uses include degreasing wool and extracting oils from nuts, seeds ...
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SOYPOD: a model of fruit set in soybean
The soybean [Glycine max (L.) Merr.] plant matches its reproductive potential to environmental conditions by adjusting the number of fruits and seeds that it produces. This adjustment is an important, but not well understood, part of the yield production process. Developing a model of fruit set will contribute greatly to a better understanding of the determination of fruit number and yield. The ...
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How to maintain soil fertility
In order to maintain soil fertility, some low-yield soil (acid soil, alkali soil and salt soil), chemical improvers and irrigation should be used to improve, remove obstacles and improve the fertility level. In addition, reasonable cultivation and rotation should be carried out to regulate the nutrients and water in the soil and prevent some nutrient deficiency and water vapor imbalance. 1. ...
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Worst Water Weeds #4: Cattails
Most people call them cattails, although you’ll come across those who refer them as “punks” or even as “corn dog grass.” If you happen to be British, you’re more likely to call them “bulrushes” or “reedmace.” They are members of the scientific family of Typhaceae, large marsh plants sporting the telltale brownish compact ...
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One crop, two ways, multiple benefits
Nitrogen fixation is one of the best examples of cooperation in nature. Soil microbes – naturally occurring bacteria in the soil – work with plants to pull nitrogen from the air. They turn the nitrogen into a form the plant is able to use. In return, the plant lets the microbes eat some of the sugars it makes. Faba beans (also called fava beans) are one example of plants that work ...
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