%0 Journal Article
%T <i>In Vitro</i> Germination and Early Vegetative Growth of Five Tomato (<i>Solanum lycopersicum</i> L.) Varieties under Salt Stress Conditions
%A Abdou Khadre San¨¦
%A Bassirou Diallo
%A Aboubacry Kane
%A Maurice Sagna
%A Djibril San¨¦
%A Mame Our¨¨ye Sy
%J American Journal of Plant Sciences
%P 796-817
%@ 2158-2750
%D 2021
%I Scientific Research Publishing
%R 10.4236/ajps.2021.125055
%X In Senegal, tomato (<i><span style=\"font-family:Verdana;\">Solanum lycopersicum</span></i><span style=\"font-family:Verdana;\"> L.) cultivation is affected by salinity in
many agro-ecological zones. The selection of salt tolerant varieties would be
an alternative solution to enhance the production. Thus, germination and growth
are studied under axenic conditions for five varieties of tomato subjected to increasing
concentrations of NaCl [0, 35, 70 and 105 mM], and supplemented in an MS/2
medium for 30 days. The results reveal that salt negatively affects the
evaluated parameters. The </span><i><span style=\"font-family:Verdana;\">Rodeo</span></i><span style=\"font-family:Verdana;\"> and </span><i><span style=\"font-family:Verdana;\">Lady Nema </span></i><span style=\"font-family:Verdana;\">varieties have the lowest
final germination rates (50%) unlike the </span><i><span style=\"font-family:Verdana;\">Mongal</span></i><span style=\"font-family:Verdana;\"> variety (55%). These last two varieties have a decrease of 71.78% and 81.28% in
the height of the stem, respectively, in the presence of NaCl at [105 mM] while
that of the </span><i><span style=\"font-family:Verdana;\">Rodeo</span></i><span style=\"font-family:Verdana;\"> variety is 70%. The </span><i><span style=\"font-family:Verdana;\">Xewel</span></i><span style=\"font-family:Verdana;\"> variety has the greatest
average number of leaves in the presence of [NaCl 35 mM] (4.95 leaves) and
[NaCl 70 mM] (4.77 leaves). The </span><i><span style=\"font-family:Verdana;\">Lady Nema</span></i><span style=\"font-family:Verdana;\"> variety records the longest taproot length (2.99 cm) unlike the </span><i><span style=\"font-family:Verdana;\">Rodeo</span></i><span style=\"font-family:Verdana;\"> variety (2.25 cm) at [NaCl 105
mM]. The </span><i><span style=\"font-family:Verdana;\">Ganila</span></i><span style=\"font-family:Verdana;\"> variety reveals the
highest number of secondary roots at the concentrations of [0, 35 and 105 mM]
of NaCl with, respectively, 44.12, 29.25, and 4.25 roots. The </span><i><span style=\"font-family:Verdana;\">Lady Nema</span></i><span style=\"font-family:Verdana;\"> variety records the highest
fresh weight of aerial (0.055 g) and root parts (0.014 g) and the lowest root
dry weights (0.0023 g). These results allow to conclude that the </span><i><span style=\"font-family:Verdana;\">Lady Nema </span></i><span style=\"font-family:Verdana;\">and</span><i><span style=\"font-family:Verdana;\"> Mongal</span></i><span style=\"font-family:Verdana;\"> varieties seem more tolerant,
%K &lt
%K i&gt
%K Solanum lycopersicum&lt
%K /i&gt
%K NaCl
%K Germination
%K Growth
%K Tolerance
%K &lt
%K i&gt
%K In Vitro&lt
%K /i&gt
%K Conditions
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=109487