Effect of Planting date and Density on Yield and Commercial Qualities of Hybrid Seed Production of Maize (Zea mays L. cv. SC 704)

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RAHMANI MOHAMMAD; ZAVAREH MOHSEN; HAMIDI AIDIN; HOOGENBOOM GERRIT

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Journal: Iranian Journal of Field Crop Science Year:2018 | Volume:49 | Issue:2 Page(s): 93-103

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Title

Effect of Planting date and Density on Yield and Commercial Qualities of Hybrid Seed Production of Maize (Zea mays L. cv. SC 704)

Author(s)

RAHMANI MOHAMMAD | ZAVAREH MOHSEN | HAMIDI AIDIN | HOOGENBOOM GERRIT | Issue Writer Certificate

Keywords

CERES functionQ2

CompetitionQ3

Seed sizeQ2

Seed qualityQ2

Temperature during PollinationQ1

Abstract

To investigate the effects of planting date (PD) and density (DNS) of B73 maize inbred line on commercial qualities of seeds of KSC704 hybrid maize, a split plot experiment was conducted where five PDs kept in main plots and five DNSs in sub-plots. Results showed that the maximum temperature higher than 34° C during fertilization lead to reduction in seed yield and seed number per plant with an increase in weight ratio of Large-round seeds in favor of flat one. For each degree Celsius increase in maximum temperature during fertilization over 34° C, the proportion of flat seeds (the most desirable size commercially) decreased about 3. 8 percent. When temperature during seed filling dropped below 13° C, the weight ratio of Large-round size decreased in the harvested seed lot. Temperature had not any significant effect on the average seed weight. On the other hand, the germination percentage of seed lots with higher portion of large-round and medium-flat seeds, increased and decreased respectively. The higher DNS changed the weight ratio of Large-round seeds in favorite to Large-flat seeds, in the way that the highest proportion of flat seeds and lowest proportion of off-size seeds produced from 60 and 70 plant per hectare. It concluded that, commercial seed growers may achieve higher portion of flat seeds in KSC704 hybrid maize seed production by planting 6 to 7 each square meter and choosing a PD that pollination is not going to face with temperatures higher than 34° C.

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APA: Copy

RAHMANI, MOHAMMAD, ZAVAREH, MOHSEN, HAMIDI, AIDIN, & HOOGENBOOM, GERRIT. (2018). Effect of Planting date and Density on Yield and Commercial Qualities of Hybrid Seed Production of Maize (Zea mays L. cv. SC 704). IRANIAN JOURNAL OF FIELD CROP SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), 49(2 ), 93-103. SID. https://sid.ir/paper/153815/en

Vancouver: Copy

RAHMANI MOHAMMAD, ZAVAREH MOHSEN, HAMIDI AIDIN, HOOGENBOOM GERRIT. Effect of Planting date and Density on Yield and Commercial Qualities of Hybrid Seed Production of Maize (Zea mays L. cv. SC 704). IRANIAN JOURNAL OF FIELD CROP SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES)[Internet]. 2018;49(2 ):93-103. Available from: https://sid.ir/paper/153815/en

IEEE: Copy

MOHAMMAD RAHMANI, MOHSEN ZAVAREH, AIDIN HAMIDI, and GERRIT HOOGENBOOM, “Effect of Planting date and Density on Yield and Commercial Qualities of Hybrid Seed Production of Maize (Zea mays L. cv. SC 704),” IRANIAN JOURNAL OF FIELD CROP SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), vol. 49, no. 2 , pp. 93–103, 2018, [Online]. Available: https://sid.ir/paper/153815/en

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