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Scientia Agricola

Print version ISSN 0103-9016

Abstract

RODRIGUEZ ROBLES, Walter Geremias; ARAUJO, Paulo Sérgio Rodrigues de  and  MINAMI, Keigo. Development of rangpur lime seedlings in relation to sowing position. Sci. agric. [online]. 2000, vol.57, n.2, pp. 371-373. ISSN 0103-9016.  http://dx.doi.org/10.1590/S0103-90162000000200029.

This experiment was conducted in a green house, with the objective of relating the position of Rangpur Lime seed to the development of seedlings. Seeds were sown in the three probable positions that they would take when planted in the soil or substratum: 1) sideways; 2) apex upwards and 3) apex downwards. The experiment was performed in plastic trays of expanded poliestirene speedlings with 128 cells filled with the substratum mixture of expanded vermiculite and vegetable organic material. The adopted experimental design used randomized blocks, with 4 replicates and 40 seeds per plot (1 seed/cell). At 75 days of sowing, a larger amount of seedlings with normal roots was observed when seeds are placed are on the side and apex down positions. The position apex upwards presented larger amount of seedlings with crooked and reeled roots. The length of the root system was almost the double of the aerial part, independent of the position of the seed, ocurring the inverse in relation to the mass of the dry matter.

Keywords : Citrus limonia; development roots; reeled roots.

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