Slow mildewing resistance in cultivar DPP-68 of garden pea in Himachal Pradesh, India

Banyal, D. K.; Tyagi, P. D.

doi:10.1080/096708797228672

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…In detached leaf method (Banyal and Tyagi, 1997), leaves from 15-20 days old seedlings were detached and placed in Petri dishes (11 cm dia.) containing tap water supplemented with benzimidazole @ 50 ppm to enhance the longevity of detached leaves.…”

Section: In Vitro Evaluation Using Detached Leaf Methodsmentioning

confidence: 99%

“…Saint-Amans is one of the most destructive and widely prevalent diseases occurring both on main and off-season crop in Himachal Pradesh. The disease occurs in epidemic proportion almost every year, as crop is grown around the year in different zones of Himachal Pradesh (Kapoor and Kumar, 1996;Banyal and Tyagi, 1997). The disease is of economic importance due to yield reduction and reduced seed quality under severe conditions as 33 to 69 per cent of pea foliage has been reported to be infected with powdery mildew (Suneetha et al, 2014).…”

Section: Research Articlementioning

confidence: 99%

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Evaluation of Pea Genotypes for Resistance against Powdery Mildew Caused by <I>Erysiphe pisi</I>

Chaudhary¹,

Banyal²

2017

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Section: In Vitro Evaluation Using Detached Leaf Methodsmentioning

confidence: 99%

Section: Research Articlementioning

confidence: 99%

Evaluation of Pea Genotypes for Resistance against Powdery Mildew Caused by <I>Erysiphe pisi</I>

Chaudhary¹,

Banyal²

2017

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Genetics of Chickpea Resistance to Five Races of Fusarium Wilt and a Concise Set of Race Differentials for Fusarium oxysporum f. sp. ciceris

2005

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Genetics of resistance in chickpea accession WR-315 to Fusarium wilt was investigated, and a concise set of differentials was developed to identify races of Fusarium oxysporum f. sp. ciceris. A population of 100 F7 recombinant inbred lines (RILs) from a cross of WR-315 (resistant) and C-104 (susceptible) was used to study genetics of resistance to races 1A, 2, 3, 4, and 5 of F. oxysporum f. sp. ciceris, and a population of 26 F2 plants from a cross between the same two parents was used to study inheritance of resistance to race 2. Segregations of the RILs for resistance to each of the five races suggest that single genes in WR-315 govern resistance to each of the five races. A 1:3 resistant to susceptible ratio in the F2 population indicated that resistance in WR-315 to race 2 was governed by a single recessive gene. A race-specific slow disease progress reaction was observed in chickpea line FLIP84-92C(3) to infection by race 2, a phenomenon termed as slow wilting, that is different from previously reported late wilting with respect to latent period, disease progress rate, and final disease rating. Twenty-nine germ plasm lines (27 Cicer arietinum and two C. reticulatum) including previously used differentials were evaluated for their reactions to infection by the five races. Only eight of the 29 germ plasm lines differentiated at least one of the five races based on either resistant or susceptible reactions, whereas the remaining germ plasm lines were either susceptible or resistant to all five races or differentiated them by intermediate reactions. A concise set of eight chickpea lines comprised of four genotypes and four F7 RILs with vertical resistance was developed as differentials for race identification in F. oxysporum f. sp. ciceris. These differential lines were characterized by early appearance of wilt symptoms, and clear and consistent disease phenotypes based on no wilt or 100% wilt incidence, which offers important improvements over previously available differential sets and provides more precise and unambiguous identification of the races.

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Exploring eco-sensitive strategies for effective powdery mildew management in grapevines

JENA,

RAJA,

RAMAMOORTHY

et al. 2023

JBC

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Grapevine powdery mildew is one of the most important plant diseases widely affecting crops in many countries. The main aim of the present study was to use Ampelomyces quisqualis isolates to suppress the powdery mildew of grapes under field conditions. The findings revealed a strong correlation between the mycoparasite, Ampelomyces quisqualis and the grape powdery mildew pathogens, suggesting its potential for effective control. The results revealed that a single spray of A. quisqualis @ 2.0 per cent (MDU1) succeeded by two sprays of Trichoderma asperellum @ 2.0 per cent (Tasp,7) were found to be effective against Erysiphe necator. In addition, liquid formulation of A. quisqualis isolate MDU1 (2% w/v) as a foliar spray at 2% containing 2 × 106 spores ml-1 the during initial occurrence of the disease up to three sprayings at 15 days interval was found to be best. Thus, a liquid formulation of A. quisqualis isolate MDU1 proved effective in managing grapes powdery mildew disease under field conditions. The rDNA ITS region of A. quisqualis isolates was analyzed at the molecular level, and the resulting sequences were subjected to GC-MS analysis. The secondary metabolite identification using GC-MS revealed the presence of antimicrobial compounds, including squalene with the highest peak of 4.643 percent, octadecanoic acid with 3.862 percent, tetradecanoic acid with 3.600 percent, and 9,12-octadecadienoic acid (Z,Z) with 1.451 percent. These bioactive compounds revealed by GC-MS analysis in crude extracts of A. quisqualis had a stronger antifungal activity against E. necator.

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Slow mildewing resistance in cultivar DPP-68 of garden pea in Himachal Pradesh, India

Cited by 3 publications

References 2 publications

Evaluation of Pea Genotypes for Resistance against Powdery Mildew Caused by <I>Erysiphe pisi</I>

Evaluation of Pea Genotypes for Resistance against Powdery Mildew Caused by <I>Erysiphe pisi</I>

Genetics of Chickpea Resistance to Five Races of Fusarium Wilt and a Concise Set of Race Differentials for Fusarium oxysporum f. sp. ciceris

Exploring eco-sensitive strategies for effective powdery mildew management in grapevines

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