Summary
Environmental influence on physiological factors that determine seed quality is discussed in relation to true potato seed (TPS). This review has been motivated by the need for high quality seed for the proper evaluation of TPS technology. The objectives of tuber production may not be in harmony with those required for the production of high quality TPS. The production of high quality TPS may be influenced by the stronger sink strength ability of fast developing tubers for assimilation of available nutrients. Earliness of tuber formation, which is needed in TPS progenitors, may tend to result in incomplete TPS development. Limiting conditions during seed development decrease the potential of the seed for field establishment. Seed vigor is the most important attribute of seed quality since it is essential for seedling performance under the adverse conditions commonly encountered during field development. The attractiveness of TPS technology for tropical areas, where potato production is limited by low-quality seed tuber availability, is decreased by the lack of seedling vigor and uniformity of seedlings derived from TPS. Current research indicates that considerable genetic improvement of TPS vigor and uniformity is possible. It is suggested that significant immediate improvement of TPS quality would result from agronomic techniques that reflect understanding of the physiological factors that influence the production and maintenance of high quality seed. Research areas needed to develop methodologies for TPS production with optimum expression of genotype are identified.
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Abbreviations
- TPS:
-
True potato seed
- CIP:
-
International Potato Center, Lima, Peru
- SD:
-
Short day
- LD:
-
Long day
- INIA:
-
Instituto Nacional de Investigaciones Agropecuarias, Chile
- GA:
-
Gibberellic acid
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Communicated by H. F. Linskens
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Pallais, N. True potato seed quality. Theoret. Appl. Genetics 73, 784–792 (1987). https://doi.org/10.1007/BF00289380
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DOI: https://doi.org/10.1007/BF00289380