EurekaMag.com logo
+ Translate

Relationship between guard cell length and cold hardiness in wheat


, : Relationship between guard cell length and cold hardiness in wheat. Canadian Journal of Plant Science 74(1): 59-62

Identification of plant characters associated with cold tolerance is useful for the development of plant-breeding selection procedures and understanding the underlying mechanisms of cold hardiness. This research investigates the association of guard cell length with cold tolerance and examines the relationship between cell size, as estimated from guard cell length,. and other characters previously found to be highly correlated with cold tolerance in wheat (Triticum aestivum L. em. Thell.). Guard cell length was compared with field survival, LT-50, tissue water content. and plant erectness of cultivars representing a wide range of cold tolerance levels. The three most cold-tolerant cultivars had the smallest cells, while the cultivar with the largest cell size was a spring type. There were significant (P ltoreq 0.05) correlations between guard cell length and all cold-tolerancerelated characters considered. Differences in guard cell length were most closely related to field survival as measured by Field Survival Index (FSI). Stepwise regression analysis indicated that cell size explained 45% of the variability in FSI. Cell size combined with plant erectness and tissue water content explained 88% of the variability in FSI. LT-50 and cell size together explained 96% of the variability in FSI. The effects of cell size on cold hardiness may relate to its influence on cell water content and cellular mechanical stress during intercellular ice-crystal formation and freezing-induced dehydration. Guard cell size should be a useful selection tool in cultivar development programs that have increased cold hardiness as the breeding objective.

(PDF 0-2 workdays service)

Accession: 002477817

Submit PDF Full Text: Here


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Related references

Amano, Y., 1987: Winter wheat breeding for resistance to snow mold and cold hardiness iv. selection and evaluation of cold hardiness based on electric conductivity measurements in winter wheat cross. Common methods for the determination of freezing injury have been indicated by either percentage of survival or estimated degrees of injury based on the general appearance of plants, the apparent amount of killing of foliage, or the vigor of renew...

Amano, Y., 1987: Winter wheat breeding for resistance to snow mould and cold hardiness. IV. Selection and evaluation of cold hardiness based on electric conductivity measurements in winter wheat crosses. The electric conductivity (EC) method, by which the concentration of electrolytes in extracts from cold-treated plants is measured, was evaluated for selection of lines and individuals with cold hardiness in winter wheat breeding. When wheat plant...

Orlyuk, A.P.; Pisarenko, Z.V., 1996: Variability of stem length and cold hardiness in the dwarf hybrids of winter wheat. Expression of dwarfism genes in Kherson dwarf 1 (KD1) hybrids of winter wheat depends on genetic background. Hybrids from crosses of KD1 with other non-allelic dwarfism genotypes display the reserve of positive transgressive variability in stem le...

Akerman, A.; Lindberg, J., 1927: Death from cold and cold hardiness of plants, with researches on winter hardiness of wheat. The literature on hardiness in plants is summarized. The cause of death from cold may be ice formation, either intra- or inter-cellular; although some plants die above the freezing point, and others freeze repeatedly without dying. The internal fa...

Freyman, S.; Kaldy, M.S., 1979: Relationship of soil fertility to cold hardiness of winter wheat crowns. In 2 controlled-environment experiments, N fertilizer applied to a dark brown chernozem soil decreased cold hardiness of winter wheat; P applied without N had little effect. When applied together, P counteracted the effect of N and produced plants...

Toman, F.R.; Mitchell, H.L., 1968: Soluble proteins of winter wheat crown tissues and their relationship to cold hardiness. Soluble proteins from crown tissue of Minturki and Ponca winter wheats were studied as the plants cold hardened and dehardened. Cold hardiness measurements by a specific conductivity method indicated that Minturki was hardier than Ponca. The solub...

Freyman S.; Kaldy M.S., 1979: Relationship of soil fertility to cold hardiness of winter wheat crowns triticum sativum. Canadian Journal of Plant Science 59(3): 853-856

Toman, F.R., 1967: Investigations on the soluble proteins of winter wheat crown tissue and their relationship to cold hardiness. Cold hardiness as determined by specific conductivity indicated that cv. Minturki was hardier than cv. Ponca. Hardiness of Minturki was increased somewhat by applying B-nine or CCC, but B-nine had little effect on soluble protein. 6 soluble-protei...

Chen, T.H.H.; Uemura, M.; Fujikawa, S., 2005: Cold hardiness in plants: molecular genetics, cell biology and physiology. Seventh International Plant Cold Hardiness Seminar, Sapporo, Japan, 10-15 July 2004. This book contains 16 papers presenting the latest research findings on plant freezing and chilling stress from major laboratories around the world. They focus on various aspects of molecular genetics and, in many cases, the use of transgenic plan...

Chandler C.K.; Lyrene P.M., 1982: Relationship between guard cell length and ploidy in vaccinium. Guard cells tended to be shortest for diploid species [V. elliotti, V. darrowi, V. arboreum, V. stamineum], and longest for hexaploids [V. ashei], but there was so much plant-to-plant variation both within ploidy levels (diploid, tetraploid [V. fu...