| independence of resistance in brachiaria spp. to nymphs or to adult spittlebugs (hemiptera: cercopidae): implications for breeding for resistance. | both nymphal and adult spittlebugs (hemiptera: cercopidae) cause serious economic damage to susceptible brachiariagrass [genus brachiaria (trin.) griseb], pastures in tropical america. both life stages are xylem feeders: nymphs feed primarily on roots and stems, whereas the adults feed mainly on foliage. numerous interspecific brachiariagrass hybrids with high levels of antibiosis resistance to nymphs of several important spittlebug species have been obtained. recent studies revealed major incon ... | 2010 | 21061990 |
| response of resistant and susceptible brachiaria spp. genotypes to simultaneous infestation with multiple species of spittlebugs (hemiptera: cercopidae). | the response of one susceptible and three resistant brachiaria spp. (hemiptera: cercopidae) genotypes to individual or combined attacks by nymphs of aeneolamia varia (f.), aeneolamia reducta (lallemand), zulia carbonaria (lallemand), and zulia pubescens (f.) was studied. we assessed the effect of infesting plants of the susceptible check brx 44-02 and of the a. varia-resistant genotypes ciat 6294 and ciat 36062 with a. varia, z. carbonaria, or z. pubescens either alone or in two-species combinat ... | 2007 | 18232408 |
| antibiosis and tolerance to five species of spittlebug (homoptera: cercopidae) in brachiaria spp.: implications for breeding for resistance. | several genera and species of spittlebugs (homoptera: cercopidae) are economic pests of brachiaria spp. grasses in tropical america. to support current breeding programs aimed at obtaining multiple spittlebug resistance, we undertook a series of studies on antibiosis and tolerance as possible mechanisms of resistance to five major spittlebug species affecting brachiaria spp. in colombia: aeneolamia varia (f.), aeneolamia reducta (lallemand), zulia carbonaria (lallemand), zulia pubescens (f.), an ... | 2004 | 15154493 |
| characterization of resistance to adult spittlebugs (hemiptera: cercopidae) in brachiaria spp. | nymphs and adults of several spittlebug (hemiptera: cercopidae) species are key pests of forage brachiariagrasses (brachiaria spp.) in tropical america. to support current breeding programs, a series of experiments aimed at characterizing the mechanisms of resistance to adult feeding damage were carried out. five genotypes were used: two susceptible checks (ciat 0606 and ciat 0654) and three nymph-resistant genotypes (ciat 36087, ciat 6294, and sx01no/0102). test insects were aeneolamia varia (f ... | 2013 | 24020305 |
| screening for resistance to adult spittlebugs (hemiptera: cercopidae) in brachiaria spp.: methods and categories of resistance. | both nymphal and adult stages of several species of spittlebugs (hemiptera: cercopidae) are key economic pests of brachiariagrasses (brachiaria spp.) in tropical america. progress has been made in the characterization and development of antibiosis resistance to nymphs in brachiariagrasses. essentially no attention has been given to screening germplasm for resistance to adults. to support current breeding programs, a series of experiments was conducted to develop a methodology to screen for adult ... | 2009 | 19610452 |
| sublethal effects of antibiosis resistance on the reproductive biology of two spittlebug (hemiptera: cercopidae) species affecting brachiaria spp. | several greenhouse experiments were used to measure how high levels of antibiosis resistance to nymphs in two interspecific brachiaria (brachiariagrass) hybrids affect life history parameters of the spittlebugs aeneolamia varia (f.) and zulia carbonaria (lallemand), two of the most important spittlebug (hemiptera: cercopidae) species affecting brachiaria production in colombia. the a. varia-resistant hybrid ciat 36062, the z. carbonaria-resistant hybrid sx01no/0102, and the susceptible accession ... | 2008 | 18459425 |