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Respiration and Utilization of Storage Materials in Wild and Cultivated Pea Seeds during Germination
Author(s) -
MARBACH IRITH,
MAYER A. M.
Publication year - 1976
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1976.tb04871.x
Subject(s) - germination , sativum , biology , pisum , respiration , oxidative phosphorylation , starch , botany , horticulture , food science , biochemistry
Breakdown of storage materials, oxygen uptake, respiratory control and ADP/O ratios in the cotyledons of the garden pea P. sativum and in the wild pea P. elatius were compared. Starch and protein degradation was slower in P. elatius than in P. sativum . Embryo growth began later in the wild pea. However, in the garden pea the mitochondria were uncoupled after about 48 h of germination, while in P. elatius the ability to carry out oxidative phosphorylation was maintained for 4 days. The respiratory control ratio was higher in the wild pea at all stages of germination and a steady level of oxygen uptake was maintained in the cotyledons for at least 3 days. The findings are discussed in relation to the ecological requirements for germination in the two species.