Blackgram (Phaseolus mungo) germplasm evaluation against different diseases

Abstract

One hundred diverse stocks of blackgram [Phaseolus mungo 1.] were evaluated during 1995-97 against 5 diseases
widely prevalent in Himachal Pradesh. In all 13, 18, 18,25 and 31 genotypes of black gram showed varying levels of
resistance to anthraenose,Colletotrichum lindemuthianum (Sace. & Magnus) Brioso & Cavara, Cercospora leaf spot,
Cercospora canescens (Ell. & Martin, Mulder & Holliday) and C. cruenta (Sacc.), powdery mildew, Sphaerotheca
fuliginea (Schlecht ex Fr Poll), web blight, Rhizoctonia solani Kuhn and mung yellow mosaic virus and mung yellow
mosaic gemini virus respectively. Four genotypes were found to be resistant to 4 different diseases, viz 'TEU 95-1
' (anthracnose, powdery mildew, Cercospora leaf spot and mung yellow mosaic virus), 'HPBU 51' and 'P 38' (Cercospora
leafspot, powdery mildew, web blight and mung yellow mosaic virus) and 'UPU 95-1' (anthracnose, Cercospora leaf spot,
powdery mildew and mung yellow mosaic virus). Nine genotypes were resistant to two diseases ie 'HPBU 38',
'HPBU 153' ,'LBG 626' and' UG 361' (mung yellow mosaic virus and web blight) 'HPBU 78' (mung yellow mosaic
virus and powdery mildew), 'HPBU 98'(Cercospora leaf spot and powdery mildew), 'P 44' (anthracnose and web
blight), 'WBG 57' (Cercospora leaf spot and web blight), 'WVG 108' (Cercospora leaf spot and mung yellow mosaic
virus), whereas 5 genotypes were resistant to 3 diseases, viz 'KU 305' and 'WVG 110' (anthracnose, Cercospora leaf
spot and mung yellow mosaic virus), 'Pusa 3' and 'UPU 91-7' (anthracnose, mung yellow mosaic virus and web blight)
and 'uG 407' (Cercospora leaf spot, mung yellow mosaic virus and powdery mildew). Interestingly, genotypes 'HPBU
70', 'HPU 153', 'KU 305" 'P 38', 'Pusa 3', 'UPU 91-7' and 'WVU 110' gave higher yield/plant.