Embryo Proteins and Poly(A)(+) RNA in two Physiological Lines of × Haynaldoticum sardoum During Seed Development and Ripening

The content of extractable proteins and of poly(A)+ RNA in the embryos of two different physiological lines (CP, CV) of × Haynaldoticum sardoum Meletti et Onnis was evaluated at different stages of seed ripening and in after-ripe seeds. The two lines differ in their pattern of protein accumulation; moreover their ability to synthesize polipeptides in the course of seed development is different. The CP and CV seeds are characterized by a different «elative» dormancy: on this basis certain correlations between germination and growth pattern and protein and poly(A)+ RNA metabolism are hypothesized.