scholarly journals Physiological Studies on the Mechanism of Tuber Formation of Potato Plant. : (part 1. & part 2). (A brief paper).

1957 ◽  
Vol 26 (1) ◽  
pp. 34-36 ◽  
Author(s):  
Yozo OKAZAWA
1955 ◽  
Vol 3 (4) ◽  
pp. 291-304
Author(s):  
N. Krijthe

An account is given of an investigation, to be continued for several years, on the relationship between chitting, number of sprouts on the seed potato and the grading of the harvested potatoes. The influence of the following treatments on tuber growth (one treatment per year) was studied: (1) methods of chitting; (2) size of seed potatoes and (3) storage condition. After the first fortnight's growth, whole, sample plants were lifted weekly to study the position of stolons on the stems, and the location of the largest and smallest tubers on the plant, the size of tuber being judged by its length. At each lifting, the relative positions of the largest, the smallest and of the medium-sized tubers were the same on each plant. These positions were approximately the same in different varieties of potatoes, and the general scheme is shown diagramatically. The treatments (1), (2) and (3) showed no significant effects on formation and growth of tubers provided the sprouts of the seed potatoes were the same length. The phenomenon of secondary-tuber formation is discussed.-D.B. (Abstract retrieved from CAB Abstracts by CABI’s permission)


1960 ◽  
Vol 32 (1) ◽  
pp. 73-80
Author(s):  
Onni Pohjakallio ◽  
Laura Karhuvaara

The following are the main conclusions to be drawn from the results of experiments in which the resistance of F1 clones descended from the species hybridization Solanum demissum x S. tuberosum (Rosafolia) was investigated: The clones forming purple tubers appeared to be very susceptible to the potato rugose. Bud mutants descended from the former, forming white tubers, appeared to be wholly resistant to this virus. The virus accelerated the onset of tuber formation and the decline of the haulms of the susceptible F1 plants. The degeneration of the virus-diseased plants did not progress from one vegetative generation to the next; instead, the virus altered the rate of development of the potato plant to a new level.


2015 ◽  
Vol 31 (1–2) ◽  
pp. 221-223
Author(s):  
M. W. Borys ◽  
G. Jeske

Cytokinin activity in the potato plant (<i>Solarium tuberosum</i> L.), estimated by the tobacco callus assay method, depends upon the ratio of Cl<sup>-</sup> : SO<sub>4</sub><sup>--</sup> given to the plant (expressed as ppm) and upon the plant 'part or organ. The order of rising cytokinin activity for nutrient solutions tested, independent of the plant part or organ analysed, was as follows: 212 Cl : 127 S< 372 Cl : 40 S<0 Cl : 225 S. Similary, the plant parts showed the following order of rising cytokinin activity: roots, stems < leaf blades < tubers < leaf petioles, leafy tops.


1962 ◽  
Vol 15 (3) ◽  
pp. 413-419 ◽  
Author(s):  
Yozo Okazawa ◽  
Harold W. Chapman
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document