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a Bangabadhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Department of Agronomy, Gazipur-1703, Bangladesh
b Pulses Research Centre, Bangladesh Agricultural Research Institute (BARI), Gazipur-1701, Bangladesh
c Asian Vegetable Research and Development Center P.O. Box 42, Shanhua, Tainan, Taiwan 741, R. O. C
* Corresponding author (aafzal{at}bdcom.com)
‘BUmug-1’ mungbean [Vigna radiata (L.) Wilczek] (Reg. no. CV-217, PI 633419) was developed jointly by Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur, Bangladesh and Lentil Blackgram Mungbean Development Pilot Project (LBMDPP) of the Bangladesh Agricultural Research Institute (BARI), Gazipur, Bangladesh. BUmug-1 was released in Bangladesh in 2000 for stable and high yield with combined resistance to Mungbeanyellow mosaic virus (MYMV) and Cercospora leaf spot (CLS) (caused by Cercospora cruenta Sac. or Cercospora canescens Ellis & Martin). BUmug-1 is an early maturing, bold-seeded material with synchronous pod maturity.
BUmug-1 originated as line, VC 6372 (45-8-1), from the Asian Vegetable Research and Development Center (AVRDC), Taiwan. In 1994, 18 advanced mungbean lines together with VC 6372 (45-8-1) were received from AVRDC. In the first year, the material was tested in the research field of BSMRAU, Salna, Gazipur, Bangladesh, along with local released cultivars. Subsequently, a series of field trials were conducted across locations and years. Among the lines–cultivars, VC 6372 (45-8-1) consistently performed better in terms of yield, with synchronous maturity. Days to maturity, reaction to disease, growth habit, podding intensity, and seed yield were given priority during selection. VC 6372 (45-8-1) was evaluated in preliminary, advanced and regional yield trials during the Kharif-I, Kharif-II, and late Rabi seasons of 1996-1997, 1997-1998, and 1998-1999 at four different agroecological locations of the country (LBMDPP, 1999).
Yield trials across 3 yr in different mungbean growing areas in three cropping seasons in Bangladesh showed that BUmug-1 averaged 1400 kg ha–1 compared with 1200 kg ha–1 for the check Barimung-2 (LBMDPP, 1999). BUmug-1 had a 30% yield advantage over Barimung-2 and 60% advantage over the local check ‘Barisal Local’ and gave consistently higher yields throughout the trials (LBMDPP, 1999). Because of its wide adaptability, the cultivar is recommended for three different mungbean growing seasons [Kharif-I (February–May), Kharif-II (August–October), and late Rabi (January–April)] and for cultivation in all mungbean growing areas of Bangladesh.
BUmug-1 has an erect growth habit and attains a height of 40 to 60 cm. It flowers in 30 to 35 d after emergence and reaches physiological maturity 50 to 60 d after emergence. Leaves are trifoliolate, alternate, and green. Leaf pubescence is absent or very sparse. Petioles are short and purple-green. The corolla is yellow-green. The raceme position is above the canopy. Mature pods are black. Seeds are drum-shaped, dull and greenish. BUmug-1 has a 100-seed weight of 5.2 g (LBMDPP, 1999). The hypocotyl color is purple. Cotyledon color is yellow.
BUmug-1 is resistant to MYMV and CLS. During initial evaluation, the cultivars or lines were screened for combined resistance with the spreader row technique (Bakr, 1994). A cultivar highly susceptible to MYMV and CLS (‘KPS 2’) was planted after every five families or lines to create artificial disease pressure. BUmug-1 was rated as 0 on a 0-to-5 rating scale (where 0 is no disease symptoms and 5 is severe disease symptoms) for both the diseases throughout its evaluation across locations (LBMDPP, 1999).
Cotyledons of BUmug-1 seeds contain 72% of the seed producing 77.2% of head dahl (intact cotyledon after splitting) with the traditional method of dehulling. It takes 22 min to cook and shows solid dispersion of 27.4%. BUmug-1 seed contains 205 mg g–1 protein and 476 mg g–1 carbohydrate (Haque et al., 2001).
Breeder seed of BUmug-1 was distributed to the Bangladesh Agricultural Development Corporation (BADC) to produce Foundation and Certified seed. Breeder seed will be maintained jointly by the Pulses Research Centre, BARI, Joydebpur, Gazipur-1701, Bangladesh and Bangabadhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur-1703, Bangladesh. U.S Plant Variety Protection for BUmug-1 will not be applied for. Small quantities of seed for research purposes may be obtained from the corresponding author or from AVRDC for at least 5 years from the date of this publication.
NOTES
Accepted for publication September 30, 2003.
REFERENCES
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