The rooting of cuttings from day-neutral tomato was not influenced by flower development, nor by SD or LD treatments of them or of the mother plants. In cuttings of the SD plant Perilla crispa flower initiation and development severely inhibited rooting. Leaves produced about 61 % of the roots, buds about 16 %, stems a small proportion. Together th...
In mustard N deficiency accelerated flower initiation and particularly flower bud development. Excess N delayed flowering but increased number of flowers. Of other elements Ca influenced flowering most.Dill developed its flowers most rapidly with normal or high rates of N. N deficiency retarded flowering and decreased the number of inflorescenses.I...
If potassium is obtained from sea-water by precipitation with calcium dipicrylamine, potassium fertilizers and sea-water will be contaminated with a little dipicrylamine. The influence of calcium dipicrylamine on metabolism of Chlorella and some other aquatic and terrestrial plants was therefore studied. It inhibited photosynthesis even at lower co...
If brussels sprouts were, self-fertilized, seed setting increased with age of the flower buds until a maximum some days before buds opened. After that, set decreased rapidly. Warmth shortened the period over which selfing was possible and shortened the period to the opening of the flowers. Most seeds occurred in 7-9 mm long buds.In crossing, seed s...
The aim of this study was to investigate the suitability of the soil layers and profiles for the penetration by roots and of methods of improving root formation by subsoiling.It was assumed that an adequate moisture supply to the crops required a loam layer at least 70 cm thick penetrable by roots.Methods for quantitative and qualitative root studi...
Graft combinations were made between flowering (donor) and non-flowering (receptor) plants, and grown in a photoperiod unfavourable for flowering of the receptor.Donor leaves of the short-day (SD) plant Perilla crispa caused a maximum flowering response after exposure to 30 SD. By the use of radioactive sucrose it was shown that a functional phloem...
