TITLE

BIOMETRIA DE FRUTOS E SEMENTES E GERMINAÇÃO DE Magonia pubescens ST.Hil (SAPINDACEAE)

AUTHOR(S)
DE MACEDO, MARICHEL CANAZZA; DE PAULA QUINTÃO SCALON, SILVANA; SARI, ALINE PERLIN; FILHO, HOMERO SCALON; ROSA, YARA BRITO CHAIM JARDIM; ROBAINA, ANTÔNIO DIAS
PUB. DATE
June 2009
SOURCE
Revista Brasileira de Sementes;2009, Vol. 31 Issue 2, p202
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Magonia pubescens is a common native tree species of Brazilian savanna with a great utilization potential because of its economic and ecologic characteristics. The aim of this work was to evaluate the biometrical characteristics of fruit and seeds of this species and its germination potential. It was studied 28 fruit and 293 seeds originated from trees placed in Aquidauana - MS. The study was conducted in the Vegetable Physiology Laboratory and nursery conditions belonged to Faculdade de Ciências Agrárias (FCA) of Universidade Federal da Grande Dourados (UFGD). There was a large variation in the size, weight and the seed-number of the fruit that presented middle values 6,66 cm of length, 8,14 cm of diameter, 248,21g fresh mass and 13,14 seeds. On the other hand, the seed size variation was smaller than the fruit size variation. The seeds presented middle values 4,81 cm of length, 8,44 cm of width and 3,5 of fresh mass. For the germination study, the seeds received the following treatments: 1) KNO3 1% 24h; 2) KNO3 2% 24h; 3) GA 500 mg. L-1 24h; 4) GA 250 mg L-1 24h; 5) Water 24h; 6) Control. The experiment was set up according to a three-replicate randomized complete design with 6 treatments. The treatment of immersion in water for 24 hours promoted the highest values of emergence percentage (80%). The gibberellins promoted the highest values of aerial part height (meddle of 14,7cm). The highest values of fresh and dry aerial part matter were observed in seedlings originated from seeds treated with GA 500 mg. L-1 (1,26 and 0,24g, respectively). The highest values of fresh and dry cotyledons matter were observed in seedlings originated from seeds treated with KNO3 1% 24h (7,63 and 1,81, respectively). It is recommended to pre-soak of the seeds in water or GA for 24 hours to obtain a greater number of seedlings.
ACCESSION #
48667882

 

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