Screening Brachiaria hybrids for resistance to the pasture spittlebug Notozulia entreriana(Berg, 1879) (Hemiptera: Cercopidae) in central Brazil
The beef cattle industry in tropical America,with its extensive production systems, depends on forage grasses for meat production.Several species of the genus Brachiaria comprise the most important of these grasses. Because of their excellent adaptation, particularly of B.decumbens to low‐fertility acid soils,they have been widely adopted throughout Central and South America. The extensive monoculture of B.decumbens,however,has favored the buildup of several spittlebug species, the most damaging pests of Brachiaria in tropical America.These insects can drastically reduce plant growth,dry matter production as well as forage quality (Valério et al.,2001).A great effort has been devoted to finding grasses resistant to spittlebugs.The objective of the present work was to evaluate 28 hybrids of the genus Brachiaria,from the germplasm available at Embrapa Beef Cattle Research Center,for resistance to the spittlebug Notoz ulia entreriana using the selection criteria of nymphal survival and nymphal period.
antibiosis forage grass froghopper host plant resistance pasture pests
J.R.Valério L.R.Barbosa C.B.do Valle M.Rabaiolli M.C.M.Oliveira
Embrapa Beef Cattle,P.O.Box 154,Campo Grande,MS,79002-970,Brazil CN Pq/Fundect PhD scholar CN Pq/Fundect BS scholar AGRAER
国际会议
呼和浩特
英文
2008-06-29（万方平台首次上网日期，不代表论文的发表时间）