Oilseed Research Centre Research Articles

A network of spiders

Dr. Charles Dondale has worked on the ecology and taxonomy of spiders for 38 years, and is author or co-author of more than 80 scientific papers published in international journals. He retired from Agriculture and Agri-Food Canada in 1990, but continues his research as an Honorary Research Associate of the Eastern Cereal & Oilseed Research Centre.

AC Legend barley

AC Legend is a six-rowed spring feed barley (Hordeum vulgare L.) cultivar bred at the Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, and evaluated by the Easter Canada Barley Breeding Group. It was selected from a Chapais/CIMMYT-6 cross and is suitable for growing in eastern Canada, where it out-yielded the check cultivars AC Stephen, Chapais, Myriam, ACCA and AC Westech. AC Legend is resistant to scald. Key words: Hordeum vulgare L., six-rowed barley, feed barley, high yield, scald resistance

Abstracts, The Canadian Phytopathological Society, annual meeting, Winnipeg, Manitoba, July 1997

Abstracts, The Canadian Phytopathological Society, annual meeting, Winnipeg, Manitoba, July 1997

Biology and Status of Tranosema rostrale rostrale (Hymenoptera: Ichneumonidae), a Parasitoid of the Eastern Spruce Budworm (Lepidoptera: Tortricidae)

Tranosema rostrale rostrale (Brishke) (subfamily Campopleginae) is a parasitoid of the eastern spruce budworm, Choristoneura fumiferana (Clemens), in Canada and the United States. T. r. rostrale has often been confused with the closely related Enytus montanus (Ashmead), another parasitoid of C. fumiferana. These 2 species are defined and characters distinguishing them are compared and illustrated. A survey across southern Quebec indicates that >99% of all T. r. rostrale/E. montanus-like parasitoids recovered from spruce budworm larvae implanted in fir stands over a period of 1 wk belong to the former species. T. r. rostrale oviposits in all postdiapause instars of C. fumiferana, as well as in several alternative hosts, starting in late May in the Quebec City region. At 20°C, development inside the host takes 14 d and the parasitoid goes through 3 stadia. T. r. rostrale is believed to complete 2 or 3 additional generations on alternate hosts. Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, 1055 du PEPS, P.O. Box 3800, Sainte-Foy, QC, Canada G1V 4C7. Eastern Cereal and Oil Seed Research Centre, Agriculture and Agri-Food Canada, Research Branch, Ottawa, ON, Canada K1A 0C6. Departement de biologie, Universite Laval, Sainte-Foy, QC, Canada G1K 7P4.

Abstracts, The Canadian Phytopathological Society, Annual Meeting, Saskatoon, Saskatchewan, June 1996

Abstracts, The Canadian Phytopathological Society, Annual Meeting, Saskatoon, Saskatchewan, June 1996

Incidence and Management of Hairy Caterpillar (<i>Spilarctia obliqua</i> Walker) on Sesame

Incidence and management of hairy caterpillar, Spilarctia oblique (Walk.) on sesame were studied in the field and laboratory of the Oilseed Research Centre, BARI, Gazipur, during March to July, 2000 and 2001, respectively. The pest appeared in the sesame crop in the fourth week of April at the flowering stage at 45-55 Days After Sowing (DAS) and remained up to third week of June at the pod maturity stage at 90-95 DAS. The peak populations of S. oblique (4.00 – 4.50 larvae per plant) and their severe infestation (100% plant) were recorded in the fourth week of May, at the pod filling stage at 60-70 DAS of the crop. The yield reduction of sesame caused by S. obliqua in the treatments 1 spray, 2 sprays, 3 sprays, and 4 spray frequencies with Diazinon 60 EC @ 2 ml/litre were calculated 25.00, 30.86, 35.24 and 37.23 percent, respectively. One spray of Diazinon 60 EC applied at the pod formation stage at 50-55 DAS gave the highest benefit cost ratio (4.20). 
 
 Key words: Incidence, hairy caterpillar, sesame, infestation, management.

Microspore culture and the performance of microspore derived doubled haploid in <i>Brassica juncea</i> (L.)

The experiment was conducted at the Tissue Culture Laboratory as well as in the net house of Oilseed Research Centre, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur on microspore culture and the performance of microspore derived doubled haploid (DH) in Brassica juncea (L.). The variety BARI Sarisha II of B. junccea was used for microspore culture and 8 DH genotypes viz., BJDH 01, BJDH 05, BJDH ii, BJDH 12, BJDH 14, BJDH 17, BJDH 18, and BJDH 20 along with their parent Rajat collected from the Plant Research International, the Netherlands were used for performance evaluation. Four-day cold treatment at 6 °C along with bud size 3.0-3.1 mm of BARI Sarisha II showed better response in the embryonic development. Significant variation was observed for the different yield contributing characters among the DH genotypes along with their parent Rajat. All the DH genotypes were late both for days to flower and days to maturity compared to the parent. Most of the DH genotypes produced higher seed yield than the parent. The genotypes BJDII 14 (7 g) and BJDH 01(7 g) were bold seeded and almost double or more in 1000-seed weight compared to the parent. Total oil content of the DH genotypes (40.64-42.28) were significantly different from the parent (3 g). Oil content of BJDH 01 was almost 3% higher than the parent could be selected to incorporate in the future breeding program. Key Words: Microspore culture, doubled haploid, Brassica juncea. doi: 10.3329/bjar.v33i4.2290 Bangladesh J. Agril. Res. 33(4) : 571-578, December 2008