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The Agrobacterium T- cyt gene was transferred into lettuce, Latuca sativa ‘Saladin’ using a genotype-independent transformation procedure employing a supervirulent Agrobacterium tumefaciens strain carrying the binary vector pMOG23. Kanamycin-resistant shoots were initiated from inoculated...
Five new repetitive sequences have been isolated from the Vicia faba genome, by cloning bands visible on agarose gel electrophoresis after digestion of genomic DNA with various restriction enzymes. The sequences were 109 to 584 bp long, their abundance ranging from 5×10 4 to 5×10 5 copies per...
Large, rounded idioblasts were observed in adaxial leaves of mulberry plants; they were clearly distinguishable from epidermal, trichome and parenchyma cells. The size and density of idioblasts varied according to leaf age. Cytological features of idioblasts were as follows: the outermost region...
Elongation of successive leaves was measured following defoliation of tall fescue plants in controlled environments. Measurements were made under constant temperatures of 24 °C and 14 °C, and after temperature changes from 24 to 14 °C and vice versa . A morphological analysis of the growing...
Flowering and pollination biology of Chloranthus serratus and Chloranthus fortunei were studied. Flowering took place from early March to mid–April in Ch. fortunei , and from April to September, the whole growth period, in Ch. serratus. The flowering period of an inflorescence of Ch. serratus...
Pitcher plants of the genus Nepenthes attract and trap invertebrate prey using nectar-secreting pitchers. Pitcher morphology and spectral reflectance characteristics were investigated for six Nepenthes species from northwest Borneo ( N. albomarginata, N. ampullaria, N. bicalcarata, N. gracilis,...
The height of Chenopodium album L. plants grown in monoculture at three different densities was followed throughout the growing season to examine size-rank determination processes with special reference to the effects of neighbourhood conditions. Changes in height rank of plants in the stands...
A mathematical model of carbon accumulation by growing fruit is presented. The model implicitly incorporates the concepts of sink activity and sink size but avoids the need to stipulate sink strength. In addition to sink activity and size, carbon accumulation depends on characteristics such as...
Nitrogen (N) deficiency leads to retranslocation of N from shoots to roots in vegetative winter wheat plants grown under controlled conditions. The accumulation and remobilization of nitrogen were quantified for each individual organ of winter wheat plants grown in the field, during a 3-week...
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