Effect of planting date and intra-row spacings on seed quality and quantity of onion in Esfahan

• Main Authors: Aminpour, Reza, Mortazavi Bak , Ahmad, Pashnam, Rasul
• Format: Publication
• Language: Persian
• Published: Isfahan(Iran) Isfahan Agricultural and Natural Resources Research Center 2011
• Subjects: CALIDAD; CEBOLLA; http://www.fao.org/aos/agrovoc#c_12934; http://www.fao.org/aos/agrovoc#c_3940; http://www.fao.org/aos/agrovoc#c_5992; http://www.fao.org/aos/agrovoc#c_6400; http://www.fao.org/aos/agrovoc#c_6927; http://www.fao.org/aos/agrovoc#c_8488; IRAN ISLAMIC REPUBLIC; IRAN REPUBLICA ISLAMICA; IRAN REPUBLIQUE ISLAMIQUE; Isfahan (Province); OIGNON; ONIONS; PLANTACION; PLANTATION; PLANTING; QUALITE; QUALITY; RENDEMENT; RENDIMIENTO; SEED; SEMENCE; SEMILLAS; YIELDS

In order to studying effects of planting dates and intra-row spacings on quantitative and qua litative traits of onion seed (Allium cepa L. Cv. Texas Early Grano 502 ) an experiment was conducted in Kabootar Abad --_ arrangement and four replications. Main factor included four planting dates (from the 22nd september every 15 days) and sub factor in eluded three intra-row spacings (10,20 and 30 centimetres ). The results showed that seed yield in first and second planti,ng dates (about 1400 kglha) was greater than third and fourth significantly. The number of umbels/m 2 , capsules/umbel and seeds /capsule were increased significantly in first and second planting dates as compared with third and fourth. planting dates the third planting date had the lowest 1000 seeds weight. Seed yield and umbels/m 2 increased significantly as plant space dereased from 30 to 10 centimeters. The means of Capsules /umbel and 1000 seed weight reduced in 10 cm plant spacing as compared with the others. Among yield components, umbels/m 2 had the most contribution in the seed yield . Planting dates and plant spacings didn't have significant effects on the seed germination percent . The seed germination rate in first and second p planting dates was higher than the two others . But plant spacings didri.t have any significant effects on this trait.