Baobab Monograph.pdf - Crops for the Future

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CHAPTER 1. INTRODUCTION AND TAXONOMY 1.1 Introduction The African baobab and its related species belong to the family Bombacaceae and the genus Adansonia. Adansonia is a member of the tribe Adansonieae, or Bombaceae, depending on the taxonomic treatment, and however natural or not these groupings are, almost certainly the genus is monophyletic. The tribe, which is pantropical, includes Bombax and Ceiba with species producing fruit fibres used as kapok. Ceiba pentandra (L.) Gaetrn. is cultivated in West Africa and Asia. The family includes about 30 genera, six tribes and about 250 species. A number of these species are used locally for wood, fruits, seeds or gum but few are economically important. The family does include economically-important species, such as the durian fruit, Durio zibethinus Murr. of tropical Asia; and balsa wood, species of Ochroma, of South and Central America; as well as the African baobab. The distribution of the individual genera of Adansonieae includes those mainly found in tropical America, one Asian e.g. Bombax, and some like Adansonia that are essentially African but with representation in Australia. The species of the tribe are usually trees, often having swollen trunks, and producing a staminal tube or androphore in the flower as well as having stipulate, usually palmately compound leaves. The genera of the family show a truncate calyx – except for Adansonia, which is typified by the calyx totally enclosing the buds. Adansonia also possesses a unique fruit type with a woody pericarp surrounding a spongy pulp with reniform seeds. 1.2 Nomenclature of baobab The history of known references to African baobab is well documented in Baum (1995). The binomial Adansonia digitata was given by Linnaeus, the generic name honouring Michel Adanson who had been to Senegal in the eighteenth century and described Baobab (Adanson, 1771). African baobab is a very long-lived tree with multipurpose uses. It is thought that some trees are over 1000 years old. Since it is not grown agronomically nor properly domesticated, there are no known varieties; earlier attempts to describe some on the basis of fruit differences are not now accepted (Chevalier, 1906; Baum, 1995). It has been introduced to areas outside Africa and grown successfully. 8
Adansonia digitata L. is related to 7 other species that have not been well known except for descriptions in floras. Most scientific references to these species date from the 1960s (Keraudren, 1963; Miège, et al., 1968, 1973; Miège, 1974, 1975; Armstrong, 1977, 1977a,1983; and the recent work of David A. Baum in the 1990s). They are listed here (table 1.1) to provide a comprehensive picture, although there appears little potential to utilise these other species more widely and certainly research emphasis will be on selection and suitable agronomy of A. digitata for the foreseeable future. 9
Page 2 and 3: BAOBAB Adansonia digitata L. Author
Page 4 and 5: DFID/FRP and DISCLAIMERS This publi
Page 6 and 7: ABBREVIATIONS FAO - ICRAF - ICUC -
Page 8 and 9: 5.2 DOMESTIC NON-FOOD USES, OTHER T
Page 10 and 11: LIST OF TABLES TABLE 1.1. NOMENCLAT
Page 12 and 13: PREFACE Tropical fruit trees are im
Page 16 and 17: Table 1.1. Nomenclature of Adansoni
Page 18 and 19: Language Country Name Yao Malawi Ml
Page 20 and 21: CHAPTER 2. DESCRIPTION OF SPECIES 2
Page 22 and 23: disc below but divided to half or m
Page 24 and 25: Figure 2.2. Flower of baobab showin
Page 26 and 27: Table 2.1. Phenology of Adansonia s
Page 28 and 29: 2.2.3 Seed dispersal and tree regen
Page 30 and 31: CHAPTER 3. DISTRIBUTION 3.1 Baobab
Page 32 and 33: 3.2 Regional diversity and distribu
Page 34 and 35: Plate 1. Large, showy, white flower
Page 36 and 37: Plate 5. A tree retaining its leave
Page 38 and 39: Plates 9 and 10. Holes in trees var
Page 40 and 41: Plate 13. Cosmetics containing baob
Page 42 and 43: Australia and the Victoria River ar
Page 44 and 45: Amino acid A B SD for A % of total
Page 46 and 47: Table 4.4 Chemical composition of b
Page 48 and 49: 4.3 Seeds Seed kernels are widely u
Page 50 and 51: The Baobab Fruit Company (2002) has
Page 52 and 53: Table 4.11. Cyclic fatty acid conte
Page 54 and 55: 5.1.2 Fruit pulp The dry pulp is ei
Page 56 and 57: 5.3 Medicinal uses 5.3.1 Traditiona
Page 58 and 59: Plate 18. Selling baobab dried leav
Page 60 and 61: Plate 22. Morphotype ‘Siradie’
Page 62 and 63: Plates 26 and 27. Morphological var
Page 64 and 65:
Plate 32. Baobab trees intercropped
Page 66 and 67:
The Southern African Natural Produc
Page 68 and 69:
studied. Some initial work is under
Page 70 and 71:
CHAPTER 7. AGROECOLOGY 7.1 Eco-clim
Page 72 and 73:
7.2 Elevation The most common altit
Page 74 and 75:
pretreatment, emergence is 4-6 days
Page 76 and 77:
The Forestry Department of Mali is
Page 78 and 79:
easy to cut while the sickle is use
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9.2 Research and extension contacts
Page 82 and 83:
NIGER - Centre de Semences Foresti
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CHAPTER 10. RESEARCH AND EXTENSION
Page 86 and 87:
REFERENCES Abbiw, D. K. (1990) Usef
Page 88 and 89:
Capuron, B. (1960) Contributions à
Page 90 and 91:
Igboeli, L. C., Addy, E. O. H. and
Page 92 and 93:
Palmer, E. and Pitman, N. (1972) Tr
Page 94 and 95:
Toury, J., Lunven, P., Giorgi, K. a
Page 96 and 97:
calyx - the outer whorl of floral e
Page 98 and 99:
ovary superior - with the flower-pa
Page 100 and 101:
INDEX A. alba, 10 A. baobab, 10 A.
Page 102:
Senegal, 8, 11, 22, 23, 24, 26, 51,
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