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Articles by M.B. Meah
Total Records ( 2 ) for M.B. Meah
  F. Khatun , M.B. Meah and K.M. Nasiruddin
  The study was conducted to develop a protocol for anther culture of eggplant. Six eggplant cultivars viz., Dohazari, IPM 31, Laffa S, Ishurdi L, ISD-006 and Jessore L were implanted on MS medium with different hormone supplements viz., 2 mg L-1 NAA + 2 mg L-1 BAP, 1 mg L-1 IAA + 2 mg L-1 BAP and 2 mg L-1 2, 4-D + 2 mg L-1 BAP for callus induction. The highest survivability of anthers (35 %) and the highest percentage of callus induction (30%) were recorded in cv. ISD-006 with 2 mg L-1 NAA + 2 mg L-1 BAP supplemented MS medium. The minimum days (27.25) required for callus initiation in the cultivar ISD-006 on MS medium with hormone supplement 2 mg L-1 2-4,D + 2 mg L-1 BAP. Anther derived calli of eggplant cultivars were transferred to MS medium with various combinations and concentrations of auxin and cytokinin for shoot regeneration but the calli did not produce any shoot. Root formation was observed from the cultured calli. For different parameters in root formation, the cultivar ISD-006 showed the best performance followed by Jessore L. Among the media, MS medium with 2 mg L-1 NAA +2 mg L-1 BAP and MS medium with 2.5 mg L-1 NAA +2 mg L-1 BAP showed better performance with insignificant variation.
  M.A. Rahman , T.H. Ansari , M.B. Meah and Tetsushi Yoshida
  Guava anthracnose was found more prevalent during the main season (April-September) than in off-season (November-February). Pestalotiopsis psidii, Colletotrichum gloeosporioides and Botryodiplodia theobromae were established as causal organisms of guava anthracnose. On potato dextrose agar medium, the growth of P. psidii was observed to be too slow as against the very quick growth of B. theobromae. All the pathogens grew well at 28 and 300C except only the P. psidii at 300C. No varieties were found resistant against all three pathogens tested but local variety I, II and IV proved resistant only against Pestalotiopsis psidii both in vitro and in situ. The Pear shaped fruits had less susceptibility than elliptical round fruits. Local varieties were less susceptible than commercial ones. In inoculated condition, variety kanchannagar showed less susceptibility in comparison with the variety sarupkati and kazipayara. Immature fruits of local variety showed decline in ascorbic acid content when diseased.
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