EFFECTS OF PHOTOPERIOD AND NITROGEN SUPPLY ON GROWTH AND REPRODUCTION IN THE GHERKIN
- 1 October 1949
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 24 (4) , 753-769
- https://doi.org/10.1104/pp.24.4.753
Abstract
Characteristic features of the ontogenetic cycle of Cucumis anguria grown under greenhouse conditions in gravel cultures were traced from germination to maturity. Growth and development were compared in high and low-N plants in both long and short day ( 8 and 16 hrs.). Outstanding responses showed that high N, 16-hr. plants attained a stem length higher than N, 8-hr. plants. At low N levels stem length of short day plants exceeded that of long-day plants. Plants in 8-hr. photoperiod produced more nodes and leaves but smaller leaf area and root systems than plants in 16-hr. day-length. Min. and max. periods of vegetative and reproductive organ differentiation and growth, water and salt absorption, and pH changes of nutrient solns. were established. Fresh and dry wts. of long day plants were greater in short day plants at both N levels. Chem. analysis disclosed values unique to the exptl. variables. The data suggest that in plants grown at uniform levels of nutrient supply, certain aspects of ontogeny are closely correlated with specific stages of development, and perhaps conditioned by them as inherent regulatory factors.This publication has 13 references indexed in Scilit:
- The Absorption of Phosphorus and Iron from Nutrient SolutionsPlant Physiology, 1947
- SOME CHEMICAL CHANGES ASSOCIATED WITH THE TRANSITION FROM VEGETATIVE TO REPRODUCTIVE GROWTH OF WINTER WHEATPlant Physiology, 1946
- GROWTH AND NUTRIENT RESPONSES OF LITTLE TURKISH TOBACCO TO LONG AND SHORT PHOTOPERIODSPlant Physiology, 1945
- EFFECT OF DAYLENGTH ON GROWTH AND REPRODUCTION OF THE CUCUMBERPlant Physiology, 1944
- GROWTH RESPONSES OF HEMP TO DIFFERENTIAL SOIL AND AIR TEMPERATURESPlant Physiology, 1944
- A Rapid Method for the Determination of Nitrogen in Plant TissueScience, 1942
- Mineral Nutrients in Relation to Flower DevelopmentScience, 1940
- STUDIES UPON THE TIME OF FLOWERING OF PLANTSAnnals of Applied Biology, 1938
- RELATION BETWEEN THE DEVELOPMENT OF ROOT SYSTEM AND SHOOT UNDER LONG- AND SHORT-DAY ILLUMINATIONPlant Physiology, 1929
- EFFECTS OF CORRELATION BETWEEN VEGETATIVE AND REPRODUCTIVE FUNCTIONS IN THE TOMATO (LYCOPERSICON ESCULENTUM MILL.)Plant Physiology, 1926