Do crop purchase programs improve smallholder welfare? The case of Zambia's Food Reserve Agency

2020 ◽  
Vol 51 (4) ◽  
pp. 519-533
Author(s):  
Winnie Fung ◽  
Lenis Saweda O. Liverpool‐Tasie ◽  
Nicole M. Mason ◽  
Ruth Uwaifo Oyelere
Keyword(s):  
Food Reserve

Structure of a food-reserve β-d-glucan produced by the haptophyte alga Emiliania huxleyi (lohmann) hay and mohler

1986 ◽  
Vol 152 ◽  
pp. 243-248 ◽  
Author(s):  
Kjell M. V»rum ◽  
Bjarne J. Kvam ◽  
Sverre Myklestad ◽  
Berit Smestad Paulsen
Keyword(s):  
Emiliania Huxleyi ◽  
Food Reserve

scholarly journals Ontogenia de la semilla de Yucca periculosa (Agavaceae)

2017 ◽  
pp. 5
Author(s):  
Eduardo García-Villanueva ◽  
E. Mark Engleman
Keyword(s):  
Cell Wall ◽  
Embryo Development ◽  
Seed Coat ◽  
Outer Integument ◽  
Triangular Prism ◽  
Seed Shape ◽  
Food Reserve ◽  
Seed Maturity ◽  
Nuclear Development ◽  
Black Color

Seeds of several Yucca species have been studied by Arnott and Horner. They mainly studied the nature condition and stated that the extra-embryonic food reserve tissue is a perisperm. This paper provides ontogenic evidence that this tissue is an endosperm with nuclear development type. The seed shape is nearly a triangular prism less than 1 cm long, black color and the raphe groove is conspicuous. The seed coat is derived exclusively from the outer integument. The exotesta external periclinal cell wall appears with irregular thickness. Both mesotesta and endotesta grow irregularly inward the seed confering to the endosperm a ruminate appearance. Toward seed maturity, the inner integument tissues disappear, thus fusion between intertegumentary and tegmen-nucellar cuticles occurs; valuable ontogenic information is showed by the cuticles, due to its persistence in spite of its generative tissue disappearance. The embryo development increases until 10 weeks after anthesis, it is cylindric, folds like "S" and two thirds of its chalazal lenght correspond to the cotyledon.

A World Food Reserve

2007 ◽  
pp. 37-57
Author(s):  
D. John Shaw
Keyword(s):  
World Food ◽  
Food Reserve

A Further Study on the Nonutilization of Rubber as a Food Reserve by Guayule

1949 ◽  
Vol 111 (1) ◽  
pp. 36-43 ◽  
Author(s):  
H. M. Benedict
Keyword(s):  
Food Reserve

The United Nations must manage a global food reserve

UN Chronicle ◽  
2009 ◽  
Vol 45 (3) ◽  
pp. 58-65
Author(s):  
Corazon T. Aragon ◽  
Flordeliza A. Lantican ◽  
Eden S. Piadozo
Keyword(s):  
United Nations ◽  
Food Reserve ◽  
The United Nations ◽  
Global Food

Reproduction in Australian Pearl Oysters (Lamellibranchia). III. Pinctada albina (Lamarck): Breeding Season and Sexuality

1958 ◽  
Vol 9 (2) ◽  
pp. 191 ◽  
Author(s):  
DJ Tranter
Keyword(s):  
Germ Cell ◽  
Breeding Season ◽  
Marine Invertebrates ◽  
Sex Change ◽  
The Body ◽  
General Tendency ◽  
Food Reserve ◽  
Pearl Oysters ◽  
Male Sex

Plnctada albina breeds continuously throughout the year, but most actively during April and May when sea temperatures begin to fall. Thus the species resembles the majority of tropical marine invertebrates in the former respect but differs from them in the latter. The heaviest spatfalls occur from June to August when sea temperatures are at a minimum. This species is hermaphrodite, with a, general tendency toward protandry. Both male-female and female-male sex changes, and the bisexual condition which sometimes prevails during change-over, have been observed. Sex change in bivalves is discussed, and it is suggested that the phenomenon can best be explained in terms of a weak hereditary sex-determining mechanism, and germ cell rudiments responsive to the food reserve level in the body such that male differentiation is favoured at lower levels and female differentiation at higher levels.

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