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REGISTRATION OF CULTIVARS

Registration of ‘Barimung-4’ Mungbean

^a M.M. Rahman, and M. Motior Rahman, Pulses Research Centre, Bangladesh Agricultural Research Institute (BARI), Gazipur, Bangladesh
^b International Center for Agricultural Research in the Dry Areas (ICARDA), P.O. Box 5466, Aleppo, Syria

Corresponding author (aafzal{at}bdcom.com)

‘Barimung-4’ mungbean [Vigna radiata (L.) Wilczek] (Reg. no. CV-181, Grif 14472, PI 614898) was developed at the Pulses Research Centre (PRC), Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur-1701, Bangladesh. The cultivar was released in Bangladesh in 1996 for stable and high yield, with combined resistance to mungbean yellow mosaic virus (MYMV) and cercospora leaf spot (CLS) [caused by Cercospora cruenta Sacc. or Cercospora canescens Ell. & Mart.].

Barimung-4 was developed from the cross Sonamung (Bangladeshi landrace) and ‘Barimung-2’ (a cultivar released by PRC, BARI in 1984). Single plant selections were made in the F₃. Forty-nine F₄ families were developed from this particular cross and evaluated in plant progeny rows in 1988 to 1989, and 27 F₄ families were selected and tested as F₅ families the following year. In the F₅, eight families were retained as promising and were evaluated as F₆ lines. Days to maturity, reaction to diseases, growth habit, podding intensity and seed yield were given priority during selection. The eight F₆ lines were evaluated in a replicated trail in 1990 to 1991 and seed was bulked. The bulked line was assigned the station identification number BMX 841121. This line was evaluated in preliminary, advanced and regional yield trials from 1991 to 1992 and 1993 to 1994 at four locations (BARI, 1994).

Yield trials over 3 yr across different mungbean growing areas in three cropping seasons in Bangladesh showed that Barimung-4 averaged 1400 kg ha^-1, compared with 1100 kg ha^-1 for the Barimung-3 check. Barimung-4 has a 27.3% yield advantage over Barimung-3 and a 44% advantage over the standard check Barimung-2 and gave consistently higher yields throughout the trial (BARI, 1994). Because of its wide adaptability, the cultivar is recommended for three different mungbean growing seasons [Kharif-II (August to October), Kharif-I (February to May) & Late rabi (January to April)] and all mungbean growing areas in Bangladesh.

This cultivar has an erect growth habit and attains a height of 52 to 57 cm. It flowers 34 to 36 d after emergence and reaches physiological maturity 60 to 65 d after emergence. Leaves are trifoliate, alternate, and green. Leaf pubescence is present. Petioles are short and purple-green. The corolla is yellowish-green. The raceme position is above the canopy. Mature pods are tan. Seed is drum-shaped and light green. Barimung-4 has a 100-seed wt of about 2.9 g (Afzal et al, 1997).

Barimung-4 is resistant to MYMV and CLS. During initial evaluation, the families or lines were screened for combined resistance using the spreader-row technique (Bakr, 1994). Highly susceptible lines for MYMV (IMN 86) and CLS (M99) were planted after every five families or lines to create artificial disease pressure. Barimung-4 rated 0 on a 0-to-5 rating scale (0 = no disease to 5 = above 50% leaf area damage) for both diseases throughout its evaluation across locations (Bakr, 1994).

Seed of Barimung-4 have 89.3% cotyledon content, and produce 68% head dhal (intact cotyledons after splitting) using the traditional method of dehulling. It takes about 17 min to cook and shows solid dispersion of 40%. Barimung-4 contains 23.1% protein and 51.3% carbohydrate (Afzal et al, 1998).

Breeder seed of Barimung-4 was distributed to the Bangladesh Agricultural Development Corporation (BADC) for producing Foundation and Certified seed. Breeder seed will be maintained by the Pulses Research Centre, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur-1701, Bangladesh. U.S. Plant Variety Protection for Barimung-4 will not be applied for. Small quantities of seed for research purposes may be obtained from the corresponding author for at least five years from the date of this publication.

NOTES

Registration by CSSA.

Accepted for publication September 30, 2000.

REFERENCES

• Afzal, M.A., A.N.M.M. Murshed, M. Abu Bakr, A. Hamid and A.B.M. Salahuddin. 1998. Mungbean Cultivation in Bangladesh (Bangla Booklet). Pulses Research Station, BARI, Gazipur-1701. In collaboration with AVRDC-USAID Bangladesh Project. 64 p. Publication no. 17.
• Afzal, M.A., A.N.M.M. Murshed, M.M. Rahman, Md. Abu Bakr, and M.L. Chandha. 1997. Three newly released mungbean varieties in Bangladesh. International consultation workshop on mungbean: Proceedings of the Mungbean workshop, 7–11 September 1997, New Delhi, India. Asian Vegetable Research and Development Center, Shanhua, Tainan. 198 p.
• Bakr, M.A. 1994. Checklist of pulse disease in Bangladesh. Bangladesh J. of Plant Path. 10(1-2):13–16.
• BARI. 1994. Pulses Research Centre Annual Report for 1994. Bangladesh Agricultural Research Institute (BARI), Gazipur, Bangladesh.

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