scholarly journals Effect of Potato Seed-Tuber Age on Plant Establishment and Amelioration of Age-Linked Effects with Auxin

1990 ◽  
Vol 93 (3) ◽  
pp. 967-975 ◽  
Author(s):  
Loretta J. Mikitzel ◽  
N. Richard Knowles
Keyword(s):  
Seed Tuber ◽  
Potato Seed ◽  
Plant Establishment ◽  
Potato Seed Tuber

scholarly journals Co-occurrence of latent Dickeya and Pectobacterium species in potato seed tuber samples from northern Finland

2021 ◽  
Vol 30 (1) ◽  
Author(s):  
Yeshitila Degefu
Keyword(s):  
Seed Tuber ◽  
Single Species ◽  
Soft Rot ◽  
Potato Seed ◽  
Pcr Assay ◽  
Diagnostic Pcr ◽  
Pectobacterium Atrosepticum ◽  
Dickeya Solani ◽  
Different Strains ◽  
Potato Seed Tuber

Recent methodological developments have uncovered the etiological diversity of the potato blackleg and soft rot Pectobacteriaceae. At least five species in the genera Dickeya and Pectobacterium have been confirmed to cause blackleg on potatoes in Finland. The bacteria are seed borne and remain latent in the tuber until conditions favourable for growth, multiplication and infection prevail. Tubers could be infected by one or more of these species. This short communication is based on the results of molecular detection data collected for more than 14 years from potato seed lots produced in Finland. Diagnostic PCR assay specific to Dickeya solani, Pectobacterium atrosepticum, Pectobacterium carotovorum, P. brasiliense and P. parmentieri revealed that potatoes are infected by one or more of these species; it also revealed that single species infection is more common than multiple colonization. An event of simultaneous occurrences of different strains from the Pectobacterium species appears to be more frequent than that observed between Dickeya and Pectobacterium species. The absence of co-occurrence of Dickeya solani and Pectobacterium atrosepticum is intriguing.

Improving Potato Seed Tuber Quality and Producers' Livelihoods in Hararghe, Eastern Ethiopia

2005 ◽  
Vol 7 (3) ◽  
pp. 31-56 ◽  
Author(s):  
Eshetu Mulatu ◽  
Osman E. Ibrahim ◽  
Etenesh Bekele
Keyword(s):  
Seed Tuber ◽  
Tuber Quality ◽  
Potato Seed ◽  
Eastern Ethiopia ◽  
Potato Seed Tuber

Effect of various phosphorus and calcium concentrations on potato seed tuber production

2018 ◽  
Vol 41 (14) ◽  
pp. 1765-1777 ◽  
Author(s):  
Ashkan Abbasian ◽  
Ali Ahmadi ◽  
Ali-Reza Abbasi ◽  
Babak Darvishi
Keyword(s):  
Seed Tuber ◽  
Potato Seed ◽  
Tuber Production ◽  
Potato Seed Tuber

Modelling the effects of potato seed-tuber age on plant establishment

1991 ◽  
Vol 71 (4) ◽  
pp. 1219-1232 ◽  
Author(s):  
N. Richard Knowles ◽  
Gabor I. Botar
Keyword(s):  
Solanum Tuberosum ◽  
Leaf Area ◽  
Seed Tuber ◽  
Weight Ratio ◽  
Dry Weight ◽  
Yield Component ◽  
Russet Burbank ◽  
Potato Seed ◽  
Plant Establishment ◽  
Seed Tubers

Four physiological ages of potato (Solanum tuberosum L. 'Russet Burbank') seed-tubers were produced by varying the time of storage at 15 °C. Age was quantified as the accumulated degree-days (dd) above 4 °C over the 199-d storage interval, and plant emergence and establishment were then modelled in controlled environment studies. As age advanced, time to 50% sprout emergence decreased, reaching a minimum at 589 dd, and then increased with further aging. Apical dominance was also reduced, as evident from a linear increase in the number of sprouts per seedpiece with advancing age. Earlier emergence from older seed-tubers led to significantly more leaves, leaf area, and leaf and stem dry weights per plant compared with younger seed-tubers early in the study; however, this advantage in plant establishment was eventually lost as time progressed through 33 d, resulting in significant age by time interactions on each yield component. Unit leaf rate, and relative growth rates with respect to leaf area and plant dry weight, thus decreased linearly with advancing tuber age over the course of the study. Leaf area ratio of plants from older tubers was greater than that from younger tubers early in the study, but this difference decreased with time. Seed-tuber age affected LAR through altering the leaf weight ratio (efficiency of partitioning dry weight to leaves), not the specific leaf area. Yield component analysis showed that the number of leaves per stem and the leaf area per leaf accounted for 85 and 12% of the total variation in plant dry weight, respectively. Because plant establishment was clearly more advanced, there may be potential for utilizing aged Russet Burbank seed-tubers to improve grade and earliness and increase yield in areas with short growing seasons. Key words: Solanum tuberosum, seed-tuber age, vigor, potato

Impact of Different US Genotypes of Phytophthora infestans on Potato Seed Tuber Rot and Plant Emergence in a Range of Cultivars and Advanced Breeding Lines

2009 ◽  
Vol 52 (2) ◽  
pp. 121-140 ◽  
Author(s):  
William W. Kirk ◽  
Firas Abu-El Samen ◽  
Pavani Tumbalam ◽  
Phillip Wharton ◽  
David Douches ◽  
...  
Keyword(s):  
Phytophthora Infestans ◽  
Seed Tuber ◽  
Potato Seed ◽  
Breeding Lines ◽  
Plant Emergence ◽  
Potato Seed Tuber ◽  
Tuber Rot
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