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Plant Growth Regulation
Avidan, B., Institute of Horticulture, A.R.O., the Volcani Center, P.O. Box 6, Bet Dagan, 50-250, Israel
Erez, A., Institute of Horticulture, A.R.O., the Volcani Center, P.O. Box 6, Bet Dagan, 50-250, Israel
In small rooted peach and nectarine plants grown in a hydroponic system, low paclobutrazol (PBZ) levels applied to the roots suppressed shoot and root development, but to a different degree. A much stronger retarding effect was observed on the shoot, with a very limited effect on roots, resulting in a reduced shoot:root ratio. The effect of the inhibitor on the roots was a rapid increase in root diameter, with increased root branching upon recovery from the inhibiting effect. Root thickening, a typical response to PBZ, was detected also in nectarines when only the top was treated with the inhibitor, indicating a basal movement of PBZ, thus contradicting the accepted notion that its translocation is only acropetal. Root thickening was the earliest detected morphological response to PBZ, being observed already 3 days after exposure to the retardant. The return to a normal diameter was abrupt. Uniconazol (UNI) had a much stronger retarding effect on peach plants than did similar concentrations of PBZ. Reduced top growth resulted in a reduction in water consumption. © 1995 Kluwer Academic Publishers.
פותח על ידי קלירמאש פתרונות בע"מ -
הספר "אוצר וולקני"
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תנאי שימוש
Studies of the response of peach and nectarine plants to gibberellin biosynthesis inhibitors in a hydroponic system
17
Avidan, B., Institute of Horticulture, A.R.O., the Volcani Center, P.O. Box 6, Bet Dagan, 50-250, Israel
Erez, A., Institute of Horticulture, A.R.O., the Volcani Center, P.O. Box 6, Bet Dagan, 50-250, Israel
Studies of the response of peach and nectarine plants to gibberellin biosynthesis inhibitors in a hydroponic system
In small rooted peach and nectarine plants grown in a hydroponic system, low paclobutrazol (PBZ) levels applied to the roots suppressed shoot and root development, but to a different degree. A much stronger retarding effect was observed on the shoot, with a very limited effect on roots, resulting in a reduced shoot:root ratio. The effect of the inhibitor on the roots was a rapid increase in root diameter, with increased root branching upon recovery from the inhibiting effect. Root thickening, a typical response to PBZ, was detected also in nectarines when only the top was treated with the inhibitor, indicating a basal movement of PBZ, thus contradicting the accepted notion that its translocation is only acropetal. Root thickening was the earliest detected morphological response to PBZ, being observed already 3 days after exposure to the retardant. The return to a normal diameter was abrupt. Uniconazol (UNI) had a much stronger retarding effect on peach plants than did similar concentrations of PBZ. Reduced top growth resulted in a reduction in water consumption. © 1995 Kluwer Academic Publishers.
Scientific Publication
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