Inheritance of Resistance to Bean Golden Mosaic Virus in Common Bean

Abstract

<jats:p>The inheritance of resistance to bean golden mosaic virus (BGMV) in common bean (<jats:italic>Phaseolus vulgaris</jats:italic> L.) was studied in crosses between susceptible bean variety XAN176 and resistant breeding lines 9236-6 (T446/A429) and 9245-94 (DOR303/T968). Disease response data were taken on plants from four generations derived from each cross (parents, F<jats:sub>1</jats:sub>, F<jats:sub>2</jats:sub>, and backcrosses (BCs) of F<jats:sub>1</jats:sub> to both parents) at 25 days after plants were inoculated with BGMV, using whiteflies (<jats:italic>Bemisia argentifolii</jats:italic> Bellows &amp; Perring) as vectors. The segregation ratios obtained from F<jats:sub>2</jats:sub> and BC generations were consistent with the hypothesis that resistance in 9236-6, which prevents a chlorotic response, is conferred by a single recessive gene. The disease response in 9245-94 was controlled by two genes—a dominant gene controlling a dwarfing reaction and a recessive resistance gene preventing a chlorotic response to BGMV infection. An allelism test demonstrated that the gene controlling resistance in 9236-6 is nonallelic with the recessive gene controlling resistance in 9245-94. The gene symbol <jats:italic>bgm</jats:italic> is proposed for the recessive resistance gene (originally from A429) in 9236-6. The gene symbol <jats:italic>bgm-2</jats:italic> is proposed for the recessive resistance gene (originally from DOR303) in 9245-94.</jats:p>

Genetics of resistance to the geminivirus, Bean dwarf mosaic virus, and the role of the hypersensitive response in common bean

“…The Ty-1 gene, which confers resistance to Tomato yellow leaf curl virus (TYLCV), was partially dominant (Zamir et al 1994). In contrast, inheritance of resistance to BGYMV in two breeding lines of common bean, 9236-6 and 9245-94, was conferred by the recessive resistance genes bgm-1 and bgm-2, respectively (Velez and Bassett 1998). This latter result suggests that resistance to BDMV and BGYMV is under different genetic control.…”

Achievements and limitations of contemporary common bean breeding using conventional and molecular approaches

“…Adequate levels of resistance to BGYMV were not achieved until different genes for resistance were pyramided into bean breeding lines (Singh et al 2000). The most BGYMV resistant cultivars such as 'Don Silvio' (DOR 482) and 'Morales' combine the recessive gene bgm for resistance to leaf chlorosis (Blair et al 2007b;Velez et al 1998), the dominant gene Bgp for resistance to pod deformation in the presence of BGYMV (Acevedo- Román et al 2004) and the QTL SW12 that is associated with delayed symptom expression (Miklas et al 1996). The SCAR marker SR-2 has facilitated the deployment of the recessive gene bgm into snap beans and different seed types of dry edible beans (Blair et al 2007b).…”

Common Bean ( Phaseolus vulgaris L.)

“…This resistance is controlled by the recessive allele bgm-1 Urrea et al, 1996;Velez et al, 1998). The recessive resistance allele bgm-2 to leaf chlorosis, first reported in breeding line DOR 303 by Velez et al (1998), is probably of Andean origin. Resistance to leaf chlorosis found in small-seeded black landraces such as Porillo Sintetico and Turrialba and present in 'DOR 390', 'Dorado' (synonymous with DOR 364), and 'ICA Pijao' controlled by a major QTL is nonallelic to those present in A 429 and DOR 303.…”

“…Nonetheless, resistance to both viruses can be expressed as percent infection, plant dwarfing, leaf chlorosis or yellowing, and pod deformation (Morales and Niessen, 1988 Beaver, 1998;Velez et al, 1998). In contrast, Morales and Singh (1991) reported a quantitative inheritance for combined symptom expression.…”

“…One of the sources found in race Durango (e.g., landrace cultivar 'Garrapato' synonymous with G 2402) was inadvertently transferred into breeding line A 429 (Morales and Singh, 1993). This resistance is controlled by the recessive allele bgm-1 Urrea et al, 1996;Velez et al, 1998). The recessive resistance allele bgm-2 to leaf chlorosis, first reported in breeding line DOR 303 by Velez et al (1998), is probably of Andean origin.…”