نتایج جستجو برای: grasses

تعداد نتایج: 6647  

2012
Doug Richmond

Endophytes can provide enhanced drought tolerance, summer survival, and insect and disease resistance to grasses. Endophytes are fungi belonging to the genus Neotyphodium that live in the leaves and stems of grasses and are carried from plant to plant only through seed. These fungi do not cause any disease in the grasses, but under most circumstances they are beneficial to the growth and surviv...

Journal: :Journal of environmental management 2009
Mark E Eiswerth Karl Krauter Sherman R Swanson Mike Zielinski

Since the mid-1980s, sagebrush rangelands in the Great Basin of the United States have experienced more frequent and larger wildfires. These fires affect livestock forage, the sagebrush/grasses/forbs mosaic that is important for many wildlife species (e.g., the greater sage grouse (Centrocercus urophasianus)), post-fire flammability and fire frequency. When a sagebrush, especially a Wyoming big...

2017
Meiling Hou Ge Gentu Tingyu Liu Yushan Jia Yimin Cai

OBJECTIVE In order to improve fermentation quality of natural grasses, their silage preparation and fermentation quality in meadow steppe (MS) and typical steppe (TS) were studied. METHODS The small-scale silages and round bale silages of mixed natural grasses in both steppes were prepared using the commercial lactic acid bacteria (LAB) inoculants Chikuso-1 (CH, Lactobacillus plantarum) and c...

Journal: :The Biochemical journal 1967
C R Slack M D Hatch

1. The activity per unit of chlorophyll of certain carboxylases, and of other enzymes involved in photosynthesis, was determined in leaf extracts of the tropical grasses, sugar-cane, maize and sorghum, and compared with the activities for wheat, oat and silver-beet. Maximum rates of photosynthetic carbon dioxide uptake were also measured for comparison with enzyme activities. 2. Phosphopyruvate...

2012
David M. Rancour Jane M. Marita Ronald D. Hatfield

Temperate perennial grasses are important worldwide as a livestock nutritive energy source and a potential feedstock for lignocellulosic biofuel production. The annual temperate grass Brachypodium distachyon has been championed as a useful model system to facilitate biological research in agriculturally important temperate forage grasses based on phylogenetic relationships. To physically corrob...

Journal: :Journal of animal science 1995
C W Bacon

A historic profile of endophyte-induced tall fescue toxicosis is presented. A chronology of events is presented, beginning with the importance of finding Balansia-infected grasses in a tall fescue pasture in north central Georgia. This initial finding was followed by the discovery that another related endophyte was present in tall fescue and other major forage grasses. This species of endophyte...

2012
Muyang Li Cliff Foster Shantanu Kelkar Yunqiao Pu Daniel Holmes Arthur Ragauskas Christopher M Saffron David B Hodge

BACKGROUND For cellulosic biofuels processes, suitable characterization of the lignin remaining within the cell wall and correlation of quantified properties of lignin to cell wall polysaccharide enzymatic deconstruction is underrepresented in the literature. This is particularly true for grasses which represent a number of promising bioenergy feedstocks where quantification of grass lignins is...

Journal: :The American naturalist 2009
Brian Beckage William J Platt Louis J Gross

Savanna models that are based on recurrent disturbances such as fire result in nonequilibrium savannas, but these models rarely incorporate vegetation feedbacks on fire frequency or include more than two states (grasses and trees). We develop a disturbance model that includes vegetation-fire feedbacks, using a system of differential equations to represent three main components of savannas: gras...

Journal: :The Proceedings of the Nutrition Society 1997
A W Illius

Savannas lie between the equatorial rain forests and the semi-deserts of the southern continents. From the herbivore’s viewpoint, the savanna environment is characterized by a mixture of herbaceous and woody vegetation, varying in quantity and growth stage according to the seasonal cycle of rainfall. C4 grasses (i.e. those with the C4 photosynthetic pathway) dominate the herbaceous layer, which...

2012
Jinaporn Wongwatanapaiboon Kunn Kangvansaichol Vorakan Burapatana Ratanavalee Inochanon Pakorn Winayanuwattikun Tikamporn Yongvanich Warawut Chulalaksananukul

The grasses in Thailand were analyzed for the potentiality as the alternative energy crops for cellulosic ethanol production by biological process. The average percentage composition of cellulose, hemicellulose, and lignin in the samples of 18 types of grasses from various provinces was determined as 31.85-38.51, 31.13-42.61, and 3.10-5.64, respectively. The samples were initially pretreated wi...

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