Multiple disease resistance in common bean genotypes and their agronomic performance in eastern Ethiopia

Common bacterial blight (CBB), bacterial brown spot (BBS), and halo blight (HB), incited by the bacterial pathogens Xanthomonas campestris pv. phaseoli (Smith) Dye, Pseodomonas syringae pv. syringa, and Pseudomonas syringae pv. phaseolicola, respectively are important diseases of common bean. In addition three fungal pathogens, web blight (WB) Thanatephorus cucumeris, rust Uromyces appendiculatus, and white mold (WM) Sclerotinia sclerotiorum, are also destructive diseases attacking common bean. Bean common mosaic virus is also one of most major virus disease. Resistance genes (QTLs and major genes) to three bacterial (CBB, BBS, and HB), three fungal (WB, rust, and WM), and one viral pathogen (BCMV) were previously mapped in two common bean populations (BAC 6 × HT 7719 and Belneb RR-1 × A55). The objective of this research was to use an integrated RAPD map of the two populations to compare the positions and effect of resistance QTL in common bean. Results indicate that two chromosomal regions associated with QTL for CBB resistance mapped in both populations. The same chromosomal regions associated with QTL for disease resistance to different pathogens or same pathogens were detected in the integrated population.

Download Full-text

‘S13‐1955C’: A high‐yielding conventional soybean with high oil content, multiple disease resistance, and broad adaptation

Journal of Plant Registrations ◽

10.1002/plr2.20112 ◽

2021 ◽

Author(s):

P. Chen ◽

G. Shannon ◽

A. Scaboo ◽

M. Crisel ◽

S. Smothers ◽

...

Keyword(s):

Disease Resistance ◽

Oil Content ◽

Multiple Disease Resistance

Download Full-text

Nitrogen topdressing and application ways of fluazifop-p-butyl + fomesafen in weed control and agronomic performance of common bean

Anais da Academia Brasileira de Ciências ◽

10.1590/0001-3765201520140347 ◽

2015 ◽

Vol 87 (4) ◽

pp. 2301-2307 ◽

Cited By ~ 2

Author(s):

MATHEUS G. SILVA ◽

ORIVALDO ARF ◽

PAULO E. TEODORO

Keyword(s):

Common Bean ◽

Weed Control ◽

Yield Components ◽

Dry Matter ◽

Block Design ◽

Agronomic Performance ◽

Randomized Block Design ◽

Bean Yield ◽

Leaf N Content ◽

Leaf N

ABSTRACT The objective of this study was to investigate the effect of interaction between nitrogen topdressing and different application ways (active ingredients) a.i. fluazifop-p-butyl + fomesafen in weed control and agronomic performance of common bean. The experiment was conducted during winter 2003 in Selvíria/MS. The experimental design used was a randomized block design with four replications in a factorial scheme 2x7. The first factor was composed by the absence or presence of nitrogen topdressing, while the second factor consisted of different application ways of fluazifop-p-butyl + fomesafen. The following variables were measured: leaf N content, dry matter of plants, yield components (number of pods plant-1, number of grains plant-1, the average number of grains pod-1 and mass of 100 grains), grain yield, phytotoxicity and weed control percentage. The nitrogen topdressing with 75 kg ha-1provided higher dry matter of plants, higher weed control and higher common bean yield of irrigated winter. In the absence of nitrogen topdressing in the application of urea before or together to fluazifop-p-butyl + fomesafen increased their effectiveness in controlling weeds without interference in the agronomic performance of common bean.

Download Full-text