Wiwik Maya Sari, Eva Sartini Bayu, Syafrudin Ilyas Syafrudin Ilyas


Aluminium (Al) tolerant mechanism in rice has not been fully understood. The objective of this
research was to find the tolerant rice aluminum, and to study the vegetative and generative
characters of Aluminum stress. Five days old of rice seedlings were growned on minimum culture
solution containing 15 ppm of Al for 72 hours and then transferred to non Al-treated culture
solution for 48 hours. The selected seedlings were measured based on Root Re-Growth (RRG)
value. RRG value was determined based on after Al-stress. This research was held in the
Greenhouse at Faculty of Agriculture, University of North Sumatera Utara, Medan, from May until
October 2012, using latin square design with treatment that were rice varieties: Hawarabunar,
Ciherang, Inpari 1, Mekongga, Cibogo dan Cigelis. From the observations of RRG value obtained
there were three tolerant rice varieties that were Hawarabunar, Ciherang and Mekongga, and three
sensitive rice varieties that were Inpari 1, Cibogo dan Cigelis.Data analysis showed that varieties
with Al-treated were significantly different the plant height, the number of tillers, the vegetative
stage, the number of productive tiller, the flower initation, the panicle length, the flag leaf length,
the time of harvesting and the 1000 grain weight. Varieties were not significantly different the
generative stage time, the number of empty grain per panicle, the number of panicle branches, and
grain weight per panicle.
Keywords : rice, Al tolerant, Root Re-Growth

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Program studi Agroteknologi

Fakultas Pertanian

Jl. Prof. A. Sofyan no. 3

Kampus Universitas Sumatera Utara

Padang Bulan- 20155

Medan-Sumatera Utara

E ISSN (2337-6597)