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  • Author or Editor: Antoine A. Puech x
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Abstract

Intact phloem appeared essential for basipetal translocation or sink-induced acropetal movement of 12C and 14C-ethephon [(2-chlorethyl) phosphonic acid]. A source-to-sink movement of 14C was indicated by the mobilization of radioactivity by fruits distal to a treated leaf. The amount of 14C mobilized by fruits was modified somewhat by their pattern of vascular connections. Over a period of time 14C diffused freely from bark tissue into wood. However, there was no indication that it was translocated in the transpiration stream. The radioactivity in extracts of fig fruits and branches was extracted and confirmed to be 14C-ethephon.

Open Access

Abstract

Plastid pigments in the fruit skin of fig (Ficus carica L. cv. Mission) were extracted in acetone:0.1 N NH4OH (9:1 v/v) and purified by thin layer chromatography. Spectral analysis indicated the pigments were chlorophylls a and b, β-carotene, lutein, violaxanthin, and neoxanthin. These constituents were similar to those found in the leaves. Carotenoids present in the skin of bluish-black mature fruits were the same as those present in green, immature fruits.

Open Access