Abstract

Polymorphic seeds of jojoba, Simmondsia chinensis, were germinated in order to determine their viability, early seedling growth and subsequent establishment. Seed size had a significant effect on percentage and rate of germination, root length, leaf area and dry weight of seedlings and young plants. The smaller seeds had stricter germination requirements, thereby providing alternative situations for seed germination under conditions of severe and increasing aridity. The percentage biomass allocated to the leaves conveys an advantage in growth for such a true drought endurer to maintain a positive carbon and water balance.

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