Factors affecting the beta-carotene content of Italian ryegrass (Lolium multiflorum Lam.) throughout its growth stages
1999
Saito, S. (Chugoku National Agricultural Experiment Station, Fukuyama, Hiroshima (Japan)) | Takahashi, Y. | Hagino, K. | Sato, S. | Manda, T.
Decrement or the beta-carotene contents with advancing growth stages has been well-known in forage crops. The experiment was carried out to clarify the effects of beta-carotene content and the weight ratio of leaf, stem and head on the beta-carotene decrement in the whole plant of Italian ryegrass, beta-carotene content of the whole plant decreased as the plant advanced through its growth stages, and the decrement depended on the stem, head, and especially the leaf weight ratios, but didn't depend on the beta-carotene contents of the plant parts. beta-carotene contents in whole plants at each growth stage could be estimated from the overall means of beta-carotene content in plant part through the growth stages and the weight ratio of each plant part, with values from estimation being very close to those from chemical analysis. beta-Carotene content of whole plant can be accurately and easily estimated from leaf weight ratio irrespective of the plant's growth stages
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