Characterization of diploid Arachis interspecific hybrids for pest resistance

Abstract

In Brazil, the thrips (Enneothrips flavens Moulton) and rednecked peanutworm (Stegasta bosquella Chambers) are considered key pests for the peanut crop. Wild species show resistance to both of these pests, and can be used in breeding programs. The production of the sterile interspecific hybrids is necessary, which could be colchicine treated to get a synthetic amphidiploid with the same or similar genomic configuration of cultivated peanut. In this context, this study proposed the hybridization of wild pest-resistant species in 18 distinct combinations, obtaining the interspecific hybrids of Arachis and completing their characterization by (i) the reproductive characterization through pollen stainability with 2% acetocarmine (AC) solution with glycerin and 0.25% tetrazolium

Genetic diversity of Helosciadium repens (Jacq.) W.D.J. Koch (Apiaceae) in Germany, a Crop Wild Relative of celery

“…They often contain valuable resistance genes and other useful genetic traits and are thus essential resources for plant breeding (Hajjar & Hodgkin, ; Kole, ). When crossing the wild species with the crops, more resilient varieties can be bred (e.g., Diawara, Trumble, Quiros, & Millar, ; Martín‐Sánchez et al, ; Ochoa & Quiros, ; Paula, Dinato, Vigna, & Fávero, ; Simmons, Jarret, Cantrell, & Levi, ; Trumble, Derecks, Quiros, & Beier, ; Trumble, Diawara, & Quiros, ) which would contribute to broadening the breeding pool (Veteläinen & Nissilä, ).…”

Effects of genome composition on phenotypic plasticity and secondary metabolites in the amphidiploid species <i>Drosera tokaiensis</i> and its parent species under different monochromatic lighting

“…(Nakamura and Ueda 1991, Hoshi et al 1994, 2008. Amphidiploidy is an allopolyploid of interspecific hybrid with a complete diploid chromosome set from each parent (Paula et al 2019) and is a crucial process for trait innovation and new species formation (Leitch and Bennett 1998). Similar to other allopolyploid complex species, these Drosera species are difficult to distinguish using external morphology because they exhibit phenotypically intermediate traits (Nakamura andUeda 1991, Hoyo andTsuyuzaki 2013).…”