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Mechanisms of Salt Tolerance and their Relevance

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  • Chickpea
  • Pigeonpea

Abstract

- Mechanisms of Salt Tolerance and their Relevance I h.5 bracr d.scus~n<-.n - p e r ilrst cons .dt rs ahc rnngc of rnerhanrsms n-atlabIc 10 hnyhcr plant% f o r c o p r n r u 81h salnnc cn--sronrncnts a n d rhcn suggcszs h o u thas Lnowledee r n a y be applacd l o d c t c c ~ salt-xolcranr gcnory pcs o f c h . c k p c ~ a n d payconpea I n rhc follour- ~ n g p a p c r . D r N P Saxcna u a l l morc ryucrfncallj consx&r h o u l o g o abour gcnclacpll~ nrnprovsng s a l t rolcrancr zn lhcsc plants I n wFccnrng and br-dsns f o r d ~ u a s c tcrrsxance. t r as ncccs-n lo p.n-ant the tau-1 orpanas- a n d undrrsrand h o u x r affects plant s r o u ~ h a n d function T h r pulse patholop? work at I C R I S A T bears - X I - m e s s In this Lalc dsscrsc. s a l ~ n ~ r \ ro8.rrr a rnultntudc o i causal factors a n d rcsponscs. and. i n ~ d ~ n t n f y x n ~ Iolcranct. rt is ncccssar! t o plnponnl causal factors. such a s general O S - O ~ ~ C ~ f f e e ~ s o r S ~ C C ~ ~ S C .on effects. 3nd t o undcrszand --ha% possrblc mcchanrsms cer- tain planls b.-c of copanf u-llh c ~ c c s s salr. Thls 1s sc l fs* .~dcnt . bul it is worlh cmphazizinp bccaubc Inany cxpcrsrncnrcrs axrcmpring t o identify salt- tolerant genosypca do not seem 1 o r r ccrnccrnrd abnur rhc mcchartisms in\,ol%.cd. O f course. u.c could con- Ilnur ro scrccn gcnot\-pcs a % graded salt Icvrls t o pick u p daffrrcnze- r n r rsponsr . bul Lnnulcdgaz of Ihc mcchrnr-m- o f -1% calcrancr oFratnnL; tn o u r rcsr c r o p s w c , u L d hclp %Ircrznlane ¶he Icrernnns prcxfs.5 7 h e follousng prtsenmtaon o f -11 cflcctr o n planrs 1s bascd Iargcl\ o n the conccpts propounded b\ a former collcaguc a1 he Unaverszty 0% Wcrlcrn Ausrrr1.n. r>r Hcnk Grccnway<e g . Cimenway 1 9 7 3 . Grecnu,a \ and M u n n r 19WO. M u n n r ct a1 1 9 8 3 ) F-urlhcr. morc d c t a ~ l c d drwuaxron o f the posnts rarscd m a \ hc round rn the rcvrCU-s

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