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Veränderte Ährenfertilität bei einhalmiger Sommergerste durch Einsatz von Bioregulatoren
Author(s) -
Natt C.,
Heilfgenthal R.
Publication year - 1991
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1991.tb00942.x
Subject(s) - biology , apical dominance , horticulture , dominance (genetics) , zoology , plant stem , botany , agronomy , shoot , biochemistry , gene
Changes in fertility of ears in monoculm summer barley after application of plant growth regulators The effect of plant growth regulators (PGR) upon the structure of the ears in the monoculm summer barley Kindred Uniculm was tested during four years in pot experiments. The influence of CCC + Ancymidol and RSW on yield structure of the whole plant and the ear which was divided in three parts (basal = 1.–5. spike internode, medial = 6.–10. spike internode, apical = off 11. spike internode) was measured. The application of PGR's in EC 32 increased kernel yield every year in a range from 11–21 %. Number of kernels were strongly improved while the thousand kernels weight remained unchanged. The increase in number of kernels in the apical zone was higher (26–64 %) than in the basal zone (0–10 %). Obviously “medial dominance” was reduced as the single kernel weight was the same in untreated plants. The decrease of GA 1 ‐content was evident after application of PGR's. A correlation between GA 1 ‐content and plant height was found.