When the cerambycid, Phoracantha recurva, invaded California in the mid 1990's a parasitoid wasp was imported from its native range in Australia as part of a biological control program. The wasp was later identified to be Avetianella longoi, which had already been released years earlier to control the congener longhorned beetle, Phoracantha semipunctata. Despite being recognized as the same spe...

In asparagus, current cultivars are mostly hybrids (known as clonal hybrids) derived from crosses between two parents, female and male, with good combining ability. Despite the fact that have been obtained for more than 40 years, studies of heterosis abilities involved limited. Similarly, there no published regarding association genetic divergence heterosis. this sense, we evaluated sets dialle...

Cercospora leaf spots is one of the major foliar diseases urdbean (Vigna mungo (L.) Hepper) causing a considerable yield loss. Screening germplasm and induction mutation has not yielded any source resistance. Hence, an experiment was conducted at research farm CSKHPKV Palampur, Himachal Pradesh during 2017–21 for introgression disease resistance in urdbean. A total 45 interspecific cross combin...

Crosses between Bristol and Bergerac strains of the self-fertilizing hermaphroditic nematode Caenorhabditis elegans do not show the heterosis effects for life-span that complicate analysis of interstrain crosses with Drosophila or mice. Instead they yield F1 progeny with life-spans similar to those of the parent strains. By analysis of life-span variation among progeny F2 populations from such ...

Strong deviation of allele frequencies from Mendelian inheritance favoring Mus spretus-derived alleles has been described previously for X-linked loci in four mouse interspecific crosses. We reanalyzed data for three of these crosses focusing on the location of the gene(s) controlling deviation on the X chromosome and the genetic basis for incomplete deviation. At least two loci control deviati...