The prevalence of fungi associated with seeds of some selected local flowers namely cosmos, marigold, calendula, and periwinkle collected from three different locations (Arboriculture Garden, Ramna Park Garden, and Ho...The prevalence of fungi associated with seeds of some selected local flowers namely cosmos, marigold, calendula, and periwinkle collected from three different locations (Arboriculture Garden, Ramna Park Garden, and Horticulture Garden) in Dhaka district and four hybrid flower seeds (African marigold, cockscomb, petunia, and Portulaca) collected from Momin Beej Ghar, Dhaka district were recorded. The results showed that the highest percent germination (91.38%) of cosmos was obtained from Horticulture garden’s seed, marigold (95.25%) obtained from Arboriculture garden’s seed, and calendula (65.88%) periwinkle (79.38%) obtained from Ramna park garden’s seeds. But in the case of hybrid seeds, African marigold showed the highest percent seed germination (98.25%). The Horticulture garden’s seed was better than the others considering the incidence of fungi in all local flower seeds tested. But periwinkle was the lowest affected seed (12.58%, 12.20%, 8.07% incidence) and marigold was the highest affected seed (40.31%, 35.33%, 31.33% incidence) collected from Arboriculture Garden, Ramna Park, and Horticulture Garden, respectively. But in hybrid flower seeds, the lowest fungal infection (3.14%) was recorded in Portulaca and petunia seeds whereas the highest (6.20%) was in African marigold seeds.展开更多
DNA markers linked with trait of disease-resistance offer a very useful tool forselection of putative disease-resistant progeny and cloning disease-resistant genes.Peaseed-born mosaic virus(PSbMV)is spread mainly thro...DNA markers linked with trait of disease-resistance offer a very useful tool forselection of putative disease-resistant progeny and cloning disease-resistant genes.Peaseed-born mosaic virus(PSbMV)is spread mainly through planting infected pea seeds andby non-persistent aphid transmission.Three strains of PSbMV have been identified,designated as P-1,L and P-4.Strain P-1 is most widely distributed.Four recessive展开更多
文摘The prevalence of fungi associated with seeds of some selected local flowers namely cosmos, marigold, calendula, and periwinkle collected from three different locations (Arboriculture Garden, Ramna Park Garden, and Horticulture Garden) in Dhaka district and four hybrid flower seeds (African marigold, cockscomb, petunia, and Portulaca) collected from Momin Beej Ghar, Dhaka district were recorded. The results showed that the highest percent germination (91.38%) of cosmos was obtained from Horticulture garden’s seed, marigold (95.25%) obtained from Arboriculture garden’s seed, and calendula (65.88%) periwinkle (79.38%) obtained from Ramna park garden’s seeds. But in the case of hybrid seeds, African marigold showed the highest percent seed germination (98.25%). The Horticulture garden’s seed was better than the others considering the incidence of fungi in all local flower seeds tested. But periwinkle was the lowest affected seed (12.58%, 12.20%, 8.07% incidence) and marigold was the highest affected seed (40.31%, 35.33%, 31.33% incidence) collected from Arboriculture Garden, Ramna Park, and Horticulture Garden, respectively. But in hybrid flower seeds, the lowest fungal infection (3.14%) was recorded in Portulaca and petunia seeds whereas the highest (6.20%) was in African marigold seeds.
文摘DNA markers linked with trait of disease-resistance offer a very useful tool forselection of putative disease-resistant progeny and cloning disease-resistant genes.Peaseed-born mosaic virus(PSbMV)is spread mainly through planting infected pea seeds andby non-persistent aphid transmission.Three strains of PSbMV have been identified,designated as P-1,L and P-4.Strain P-1 is most widely distributed.Four recessive
