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a Pulses Research Centre, Bangladesh Agricultural Research Institute (BARI), Gazipur, Bangladesh
b Agricultural University (BSMRAU), Department of Agronomy, Gaqipur-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)
Barimung-5 Mungbean [Vigna radiata (L.) Wilczek] (Reg. no. CV-209, PI 632914) was developed at the Pulses Research Centre (PRC), Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur- 1701, Bangladesh. The cultivar was released in Bangladesh in 1999 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 Ell. & Mart.).
Barimung-5 (NM 92) was introduced from Asian Vegetable Research and Development Center (AVRDC). In 1992, 33 advanced mungbean lines were received from AVRDC, Taiwan. The material was tested in the first year at the research field of Pulses Research Centre at Ishurdi, Pabna, Bangladesh, along with local released cultivars. A series of field trials were conducted across locations and years. Among the lines–cultivars, NM 92 from AVRDC 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. NM 92 was evaluated in preliminary, advanced and regional yield trials during the Kharif-I, Kharif-II, and Late rabi seasons of 1992-1993, 1993-1994, and 1994-1995 at four locations (BARI, 1996).
Yield trials over 3 yr in different mungbean growing areas in three cropping seasons in Bangladesh showed that Barimung-5 averaged 1400 kg ha-1, compared to 1200 kg ha-1 for the check cultivar Barimung-2 (Afzal et al., 1998) Barimung-5 had a 30% yield advantage over Barimung-2 and 60% advantage over the local check ‘Barisal Local’ and gave consistently higher yield throughout the trials (BARI, 1996). Because of its wide adaptability, the cultivar is recommended for three different mungbean growing seasons [Kharif-II (August-October), Kharif-I (February-May), and late rabi (January-April)] and for all mungbean growing areas of Bangladesh.
Barimung-5 has an erect growth habit and attains a height of 30 to 40 cm. It flowers in 30 to 35 d after emergence and reaches physiological maturity 55 to 60 d after emergence. Leaves are trifoliate, alternate, and green. Leaf pubescence is absent or sparse. Petioles are short and purple-green. The corolla is yellowish-green. The raceme position is above the canopy. Mature pods are black. Seeds are drum-shaped, dull and greenish. Barimung-5 has a 100-seed weight of about 4.2 g (Afzal et al., 1998). The hypocotyls are purple.
Barimung-5 is resistant to MYMV and CLS. During initial evaluation, the families or lines were screened for combined resistance by means of the spreader row technique (Bakr, 1994). Cultivars that are highly susceptible to MYMV (IMN 86) and CLS (M 99) were planted after every five families or lines to create artificial diseases pressure. Barimung-5 was rated as 0 on a 0-to-5 rating scale (where 0 is no diseases symptom and 5 is severe disease symptoms) for both diseases throughout its evaluation across locations (BARI, 1996).
Seeds of Barimung-5 have 80.2% cotyledon content, and produce 68.8% head dhal (intact cotyledon after splitting) by the traditional method of dehulling. It takes about 18 min to cook and shows solid dispersion of 26.4%. Barimung-5 contains 205 g kg-1 protein and 470 g kg-1 carbohydrate (Afzal et al., 1997).
Breeder seed of Barimung-5 was distributed to the Bangladesh Agricultural Development Corporation (BADC) for producing Foundation and Certified seed. Breeder seed will be maintained jointly by the Pulses Research Centre, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur- 1701, Bangladesh. U.S. Plant Variety Protection for Barimung-5 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 yr from the date of this publication.
NOTES
Accepted for publication March 31, 2003.
REFERENCES
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