Zobrazeno 1 - 10
of 85
pro vyhledávání: '"C.H. Bornman"'
Publikováno v:
South African Journal of Botany. 71:359-366
The purpose of the study was to follow early steps in the initiation of somatic embryos in hybrid larch ( Larix x eurolepis Henry) by using protoplasts of different lineages and studying their cryptic potential to simulate zygotic embryogenesis. Prot
Publikováno v:
South African Journal of Botany. 70:249-254
The Russian wheat aphid ( Diuraphis noxia ) feeds preferentially from the phloem of longitudinal veins of non-resistant wheat leaves. The xenobiotic, 5,6-CFDA was applied to exposed leaf blade mesophyll cells in control and aphid-infested plants. In
Autor:
J.A. de Ronde, S. L. Venter, H.J. Vorster, C.H. Bornman, E. van den Heever, T.R. Netshiluvhi, W.S. Jansen van Rensburg
Publikováno v:
South African Journal of Botany. 70:52-59
Indigenous leafy vegetables can play an important part in alleviating hunger and malnutrition in sub-Saharan Africa, but they are often neglected in research. They are important sources of micronutrients including vitamins A and C, iron and other nut
Publikováno v:
South African Journal of Botany. 70(1):60-66
Africa, including South Africa, is faced with a problem of increasing rural poverty that leads to increasing urbanisation, joblessness, crime, food insecurity and malnutrition. Root and tuber crops such as sweet potato and potato, as well as cassava
Publikováno v:
South African Journal of Botany. 70:67-74
Sustainable production of banana, plantain and enset in Africa is crucial to secure food and provide income to millions of people. These crops, however, are severely threatened by diseases, pests and environmental constraints. Most bananas in Africa
Publikováno v:
South African Journal of Botany. 70:102-108
Storage of seeds at low water content and sub-zero temperature in genebanks is the most convenient way of conserving the genetic resources of most spermatophytes. However, the seeds of many, particularly tropical, species are desiccation sensitive an
Publikováno v:
South African Journal of Botany. 70:1-11
The industrialised world’s plant biotechnology portfolio is based on a limited number of large commodity crops and input traits, and in general is unavailable and unaffordable, if not unsuitable, to the needs of sub-Saharan Africa (SSA) where per c
Autor:
L. Negash, C.H. Bornman
Publikováno v:
South African Journal of Botany. 70(1):24-30
Stump sprouts in Olea europaea L. subsp. cuspidata [(Wall. ex DC.) Ciffieri (syn. Olea africana Mill.)] were initiated by pruning back 4-year-old, 6-year-old and 12- year-old trees to a height of 25cm from the ground. Additionally, specimens from 4-y
Publikováno v:
South African Journal of Botany. 70(1):116-123
Germplasm of traditional vegetable crops were screened for drought tolerance. Different physiological, morphological and biochemical traits of drought tolerance were investigated, including enzymes of the antioxidative pathway (SOD, AP and GR), turgo
Publikováno v:
South African Journal of Botany. 70(1):31-36
The broad applicability of in vitro storage technology to the preservation of germplasm for agriculture, horticulture, forestry, biotechnologically based industries and the conservation of plants that are endangered forms the basis of this contributi