COSTA, C. J.

FRANCO, D. F.

KRÜGER, F. O.

MARTINS, A. B. N.

RIBEIRO, P. R. G.

SANTOS, F. F

SILVA, M. G.

VAZ, C. F.

Repository Open Access to Scientific Information from Embrapa

PHYSIOLOGICAL QUALITY OF RICE SEEDS STORED IN FREEZER FOR SEVEN YEARSKRÜGER, F.O.1*; SILVA, M.G. 2; VAZ, C.F.3; RIBEIRO, P.R.G.4; MARTINS, A.B.N.5; SANTOS,F . F . 6 ;  F R A N C O ,  D . F . 7 ;  C O S T A ,  C . J . 8  ( 1 P P G F V  U F P e l ,  P e l o t a s  -  R S ,  B r a s i l ,fabiolaoliveirakruger@gmail.com) (2Embrapa Clima Temperado, Pelotas - RS, Brasil) (3Embrapa ClimaTemperado, Pelotas - RS, Brasil) (4Embrapa Clima Temperado, Pelotas - RS, Brasil) (5PPGFV UFPel,Pelotas - RS, Brasil) (6PPGFV UFPel, Pelotas - RS, Brasil) (7Embrapa Clima Temperado, Pelotas - RS,Brasil) (8Embrapa Clima Temperado, Pelotas - RS, Brasil)  Rice is the second most cultivated cereal in the world, occupying an approximate area of 158 millionhectares, and Brazil is among the top ten countries worldwide producers. The seed quality is an utmostimportance element to get the expected productivity and storage is a key step in the physiological seedquality maintenance. Thus, the study evaluated the seed germination of the irrigated rice cultivar BRSQuerência stored in a freezer for seven years. The work was developed in the Official Laboratory of SeedAnalysis of Temperate Climate Embrapa. The experiment used irrigated rice seeds from the 2005/2006season, with 93% of germination power and 9.2% of water content. The seeds were stored in a freezer at -15° C for seven years. After this period, the seed water content, germination and germination first counts weredetermined. The results showed that the water content of seed rice cultivar BRS Querência decreased from9.2% to 6.5%; this percentage is within the moisture levels suitable for rice seeds storage restricting theseeds respiratory rate and limiting the reserves consumption. 76% of normal seedlings were obtained in thefirst count of germination test. The storage conditions allowed the physiological seed quality preservation,which showed 91% germination. The conclusion is that the BRS Querencia cultivar rice seeds freezerstorage  for seven years preserves the seeds physiological quality. Palavras-chave: Oryza sativa L., suitable conditions, seed preservation 

Physiological quality of rice seeds stored in freezer for seven years.

http://www.alice.cnptia.embrapa.br/alice/bitstream/doc/967368/1/Physiologicalqualityofriceseedsstoredinfreezerforsevenyears.PDF

Physiological quality of rice seeds stored in freezer for seven years.

Abstract

Similar works

Full text

Available Versions

Repository Open Access to Scientific Information from Embrapa