TY  - JOUR
T1  - Germination and Vigor of Crambe Seeds Treated with Polymers under Hydric Stress
AU - Silva, Juliano Reis Da AU - Nunes, Ubirajara Russi AU - Ludwig, Eduardo Jose AU - Martin, Thomas Newton AU - Nunes, Silvia Cristina Paslauski AU - Schmidt, Paula Michele Da Silva 
JO  - Research Journal of Agronomy
VL  - 8
IS  - 1
SP  - 1
EP  - 5
PY  - 2014
DA  - 2001/08/19
SN  - 1815-9354
DO  - rjagr.2014.1.5
UR  - https://makhillpublications.co/view-article.php?doi=rjagr.2014.1.5
KW  - Water deficit
KW  -hydric saturation
KW  -polymerization
KW  -physiological quality
KW  -Brazil
AB  - Seed treatment with polymers can be favorable for germination 
  and the establishment of plants in deficient or hydric saturated soils. This 
  study aimed to determine the effectiveness of the treatment with polymers under 
  different conditions of substrate water availability on the physiological quality 
  of crambe seeds. The seeds of 2 lots with a germination of 82 and 69% underwent 
  the following treatments: Lot 1 with and without polymer and lot 2 with and 
  without polymer. The polymer used was Solid Resin GV5 at a dose of 0.6 mL kg<SUP>-1</SUP> 
  of seeds. In gerbox, the seeds were evaluated by germination, first counting, 
  shoot and radicle length and seedling dry mass tests. In trays, the seeds were 
  sown in sand substrate and humidity kept at 80, 60, 40, 20 and 10% of capacity 
  retention. Seedlings were evaluated speed emergency index, sand emergency, shoot 
  and radicle length and seedling dry mass tests. Researchers used a complete 
  randomized 2x2 factorial block design (lotxpolymer) for tests carried out in 
  gerbox and a 2x2x6 factorial block design (lotxpolymerxcapacity retention) for 
  tests carried out on trays. The best seed physiological performance is obtained 
  at a capacity retention of 40%; however the germination of seedlings is not 
  affected until the capacity retention ranges from 20-60% showing the species 
  tolerance to water deficit conditions. Film coating is favorable to good physiological 
  quality seeds but it also shows no change for low vigor crambe seeds.
ER  -