| Summary: | Tomato (Lycopersicon esculentum Mill) is one of vegetables crops in
Indonesia. Most of tomato variety planted in highlands areas. However there are
some tomato varieties planted in lowlands areas (Purwati dan Khairunisa, 2002).
Global warming in the world changing the effect rainfall distribution and induced
low available soil water or drought. Drought inhibits plant metabolism and
reduction of yield including tomatoes.
The aim of the research were to determine effect of drought to the growth,
yield and influence of some tomato varieties planted lowland areas mechanisms
varieties tomato of lowland in drought. The research was conducted at the
Tridharma research centre Faculty of Agriculture, Gadjah Mada University,
Banguntapan, Yogyakarta and some Laboratory in Faculty of Agriculture, in
October 2012 - February 2013. The research was arranged in split pot design with
three blocks as replications. The main factors were watering intervals (1, 2, 4, and
8 days). The sub main factors were varieties of tomatoes (�Zamrut�, �Permata�,
Ratna�, �Mirah�, �Tombatu�, �Tyrana�, and �Tymoti�). Data were observed in
morpholoicaly, physiological and yield of tomatoes.
Conclusion were drought in general decreased soil water content, relative
water content, total weight of fruits and total number of fruits. However, drought
increased root shoot ratio at 48 day after planting (dap), specific leaf weight at 48
dap and net assimilation rate at 0-48 dap and proline content. The tolerance group
had lower proline compared to that of the sensitive group.
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