TY - JOUR
T1 - Seed priming improves growth of nursery seedlings and yield of transplanted rice
AU - Farooq, Muhammad
AU - Basra, Shahzad M.A.
AU - Khan, Muhammad B.
PY - 2007/6
Y1 - 2007/6
N2 - An attempt to improve the performance of rice (Oryza sativa L.) nursery seedlings through seed priming and its effect on the yield after transplantation was made in a field trial. Priming tools employed during the investigation include pre-germination, hydropriming for 48 h, osmohardening with KCl and CaCl2 (ψs-1.25 MPa) for 24 h, vitamin priming with 10 ppm ascorbic acid for 48 h and seed hardening for 24 h. All the priming techniques resulted in improved germination speed and spread, seedling fresh and dry weight, root and shoot length, number of secondary roots, seedling nitrogen, total sugars and α-amylase activity. Osmohardening with CaCl2 resulted in the best performance as indicated by improved germination speed and spread, seedling vigour and starch metabolism, followed by hardening and osmohardening with KCl. However, improved starch metabolism in coarse rice was observed in osmohardening with KCl. Higher K and Ca contents were observed in seeds osmohardened with KCl and CaCl2, respectively. Maximum straw and kernel yield and harvest index were recorded from osmohardening with CaCl2 in fine and osmohardening with KCl in coarse rice. Increased number of secondary roots and α-amylase activity were accompanied with increased seedling nitrogen and reducing sugars, respectively.
AB - An attempt to improve the performance of rice (Oryza sativa L.) nursery seedlings through seed priming and its effect on the yield after transplantation was made in a field trial. Priming tools employed during the investigation include pre-germination, hydropriming for 48 h, osmohardening with KCl and CaCl2 (ψs-1.25 MPa) for 24 h, vitamin priming with 10 ppm ascorbic acid for 48 h and seed hardening for 24 h. All the priming techniques resulted in improved germination speed and spread, seedling fresh and dry weight, root and shoot length, number of secondary roots, seedling nitrogen, total sugars and α-amylase activity. Osmohardening with CaCl2 resulted in the best performance as indicated by improved germination speed and spread, seedling vigour and starch metabolism, followed by hardening and osmohardening with KCl. However, improved starch metabolism in coarse rice was observed in osmohardening with KCl. Higher K and Ca contents were observed in seeds osmohardened with KCl and CaCl2, respectively. Maximum straw and kernel yield and harvest index were recorded from osmohardening with CaCl2 in fine and osmohardening with KCl in coarse rice. Increased number of secondary roots and α-amylase activity were accompanied with increased seedling nitrogen and reducing sugars, respectively.
KW - Hardening
KW - Oryza sativa
KW - Osmohardening
KW - Rice
KW - Secondary roots
KW - Seedling vigour
KW - Sugars
KW - α-amylase
UR - http://www.scopus.com/inward/record.url?scp=34249084299&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34249084299&partnerID=8YFLogxK
U2 - 10.1080/03650340701226166
DO - 10.1080/03650340701226166
M3 - Article
AN - SCOPUS:34249084299
SN - 0365-0340
VL - 53
SP - 315
EP - 326
JO - Archives of Agronomy and Soil Science
JF - Archives of Agronomy and Soil Science
IS - 3
ER -