The spread ofErwinia carotovora subsp.atroseptica and subsp.carotovora from stem lesions and degenerating seed tubers to progeny tubers in soil

1982 ◽  
Vol 25 (1) ◽  
pp. 41-50 ◽  
Author(s):  
D. H. Lapwood ◽  
R. I. Harris
Keyword(s):  
Seed Tubers ◽  
Stem Lesions ◽  
Oferwinia Carotovora

Effect ofErwinia carotovora subsp.atroseptica on yield of potatoes from cut and uncut seed tubers in Valencia

1994 ◽  
Vol 37 (1) ◽  
pp. 21-24 ◽  
Author(s):  
R. L. Wastie ◽  
G. R. Mackay ◽  
J. Carbonell
Keyword(s):  
Seed Tubers ◽  
Oferwinia Carotovora

Age of potato seed-tubers influences protein synthesis during sprouting

1993 ◽  
Vol 89 (2) ◽  
pp. 262-270 ◽  
Author(s):  
G. N. Mohan Kumar ◽  
N. Richard Knowles
Keyword(s):  
Protein Synthesis ◽  
Potato Seed ◽  
Seed Tubers

The influence of growth rate on cellular size ofErwinia carotovora

1968 ◽  
Vol 8 (4) ◽  
pp. 265-267
Author(s):  
P. Fernandez ◽  
A. Portolés ◽  
M. T. Iriarte
Keyword(s):  
Growth Rate ◽  
Oferwinia Carotovora

EFFECTS OF TEMPERATURE AND SEED TUBER BUD POSITION ON SHOOT EMERGENCE OF THE POTATO CULTIVARS JEMSEG AND CONESTOGA

1987 ◽  
Vol 67 (2) ◽  
pp. 599-603 ◽  
Author(s):  
A. W. McKEOWN
Keyword(s):  
Seed Tuber ◽  
Potato Cultivars ◽  
Seed Tubers ◽  
Solatium Tuberosum ◽  
Delayed Emergence ◽  
Early Maturing ◽  
Basal Portion ◽  
Bud Position ◽  
Effects Of Temperature ◽  
Cut Seed

Shoots of the early-maturing potato (Solatium tuberosum L.) cultivar Jemseg often do not emerge uniformly when cut seed pieces are planted in cold soil. Under controlled temperatures of 10, 15 and 20 °C, shoots from whole tubers and basal portions of Jemseg tubers emerged later than those from apical portions of seed tubers. The delayed emergence of the basal portion was most pronounced at low temperatures and ranged from 5 to 17 d. Emergence from basal vs. apical portions of Conestoga was delayed by 10 d at 10 °C and by 4 d at 15 °C, only when seed tubers with a single dominant apical sprout were used. There was no delay at 20 °C. The variable time to emergence of shoots in the field can be explained by delayed emergence from basal buds on cut seed pieces.Key words: Potato, cultivars, emergence, bud position, temperature, seed tuber

Growth-room and field studies with seed tubers treated with ethylene and 1-methylcyclopropene (1-MCP) during storage

2006 ◽  
Vol 83 (2) ◽  
pp. 149-160 ◽  
Author(s):  
K. Pruski ◽  
R. K. Prange ◽  
B. J. Daniels-Lake ◽  
J. Nowak ◽  
T. Astatkie ◽  
...  
Keyword(s):  
Field Studies ◽  
Seed Tubers ◽  
Growth Room

Determination of optimum tuber planting density in the potato varieties Pentland Squire, Cara, Estima, Maris Piper and King Edward

1992 ◽  
Vol 119 (1) ◽  
pp. 35-44 ◽  
Author(s):  
D. C. E. Wurr ◽  
J. R. Fellows ◽  
E. J. Allen
Keyword(s):  
Complex Analysis ◽  
Seed Tuber ◽  
Tuber Size ◽  
Planting Density ◽  
Potato Seed ◽  
Stem Density ◽  
Seed Tubers ◽  
Net Returns ◽  
Analysis Technique ◽  
The Cost

SummaryThirty-two experiments examining the effects of the weight and within-row spacing of potato seed tubers on graded tuber yields of five varieties were conducted on eight sites from 1980 to 1985. A complex analysis technique was used to combine these data and estimate the optimum tuber planting densities for different ratios of seed cost to small (40–60 mm) and large (60–80 mm) ware value. The same technique could be applied to any other combination of seed cost, ware size and ware value.The optimum tuber planting density decreased with increasing seed-tuber weight. Differences in optimum planting density between varieties were much greater with small (35 g) than with large (105 g) seed tubers and decreased as the cost of seed increased relative to the value of ware. As large ware became worth more than small ware the influence of increasing seed cost on the optimum density was reduced. As the value of large ware increased, net returns increased and the effect of seed cost on net returns was reduced. Mean tuber size decreased with increasing stem density at harvest and at the same stem density was lower in varieties producing more daughter tubers/stem. Changes of mean tuber size (μ) and the spread of yield across size grades (σ) with time were well described by parallel curves in different varieties. It is suggested that in future it may not be necessary to determine optimum tuber planting densities by complex experiments involving several seed-tuber weights and spacings. Instead μ and σ could be estimated from simple experiments and tuber spacings determined by comparison with control varieties.

Behavioral and EEG changes following chronic brain stem lesions in the cat

1950 ◽  
Vol 2 (1-4) ◽  
pp. 483-498 ◽  
Author(s):  
D.B. Lindsley ◽  
L.H. Schreiner ◽  
W.B. Knowles ◽  
H.W. Magoun
Keyword(s):  
Brain Stem ◽  
Eeg Changes ◽  
Brain Stem Lesions ◽  
Stem Lesions
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