NDLI: Screening sugarcane (Saccharum sp.) genotypes for salt tolerance using multivariate cluster analysis

Content Provider	Springer Nature Link
Author	Cha um, Suriyan Chuencharoen, Sasiwimon Mongkolsiriwatana, Chareerat Ashraf, Muhammad Kirdmanee, Chalermpol
Copyright Year	2012
Abstract	Disease-free sugarcane plantlets of 11 cultivars derived from meristem cuttings were photoautotrophically grown on the MS medium and subsequently exposed to 0 (control) or 200 mM NaCl (salt stress) for 14 days. Sodium ion (Na$^{+}$) in all sugarcane varieties was enriched when plantlets were subjected to 200 mM NaCl, except K88-1. Chlorophyll a (Chl$_{a}$), chlorophyll b (Chl$_{b}$) and total carotenoids (C$_{x+c}$), in the salt stressed leaves of all genotypes decreased significantly, but the extent of decrease was variable among different genotypes. In contrast, proline content in salt stressed plantlets of all sugarcane genotypes increased markedly, except in genotypes K95, K92-2 and LK92-4. Maximum quantum yield of PSII (F$_{v}$/F$_{m}$), photon yield of PSII (Φ$_{PSII}$), quantum efficiency of PSII (qP) and net photosynthetic rate (P$_{n}$) in salt stressed plantlets of all genotypes were significantly dropped, whereas Φ$_{PSII}$ and qP in cv. KK88-1 were alleviated, resulting in improved P$_{n}$. Moreover, growth parameters including shoot height, root length, fresh weight, dry weight and leaf area in salt stressed plantlets of all genotypes were significantly inhibited. The Na$^{+}$ accumulation, pigment degradation, proline accumulation, photosynthetic abilities and growth inhibition in saline regimes were subjected to Hierarchical cluster analysis. Salt tolerant, K88-1 and UT94-7 and salt susceptible, K92-2 and LK92-4 classes of sugarcane genotypes were classified. The salt tolerant cultivars may be further studied including yield, sugar content and ratoon recovery rate in saline field trials.
Starting Page	23
Ending Page	33
Page Count	11
File Format	PDF
ISSN	01676857
Journal	Plant Cell, Tissue and Organ Culture (PCTOC)
Volume Number	110
Issue Number	1
e-ISSN	15735044
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-02-17
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chlorophyll a fluorescence Growth reduction Net-photosynthetic rate Pigment degradation Proline Plant Pathology Plant Genetics & Genomics Plant Physiology Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Horticulture

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