EVALUATION OF YIELD AND YIELD COMPONENTS OF THREE MATURITY GROUPS OF SUNFLOWER AS A SECOND CROP IN VARAMIN, IRAN

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SHAKIBA MOHAMMAD REZA; AALIARI HOUSHANG; JAVANSHIR A.; ESFANDIARI E.; AZIZPOUR K.; SHEKAARI F.

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Journal: JOURNAL OF AGRICULTURAL KNOWLEDGE Year:2006 | Volume:16 | Issue:1 Page(s): 41-50

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Title

EVALUATION OF YIELD AND YIELD COMPONENTS OF THREE MATURITY GROUPS OF SUNFLOWER AS A SECOND CROP IN VARAMIN, IRAN

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Keywords

SECOND CROPPINGQ2

SUNFLOWERQ3

VARAMINQ2

YIELD AND YIELD COMPONENTSQ3

Abstract

An experiment was conducted to evaluate YIELD AND YIELD COMPONENTS of three: 1- early (Zaria, Hybrid 25 and Chemianka), 2- medium (Armavirsky, Hybrid 33 and Golshid) and 3-late (progress, Record and Gabor) maturity groups of SUNFLOWER (Helianthus annus L.) as a second crop in VARAMIN, Iran, using randomized complete block design (RCBD) with three replications during growing season of 2001. All of the genotypes used in this experiment expect Hybrid 25, Hybrid 33 and Golshid, were non-hybrid cultivars. Seedbed preparation and planting were coincided with the harvesting time of wheat crop in the area and seeds were planted on June 5th, 2001. Due to high daily temperature during growth period the number of days from seeding to flowering, flowering to physiological maturity and thus from planting to physiological maturity decreased. Medium maturity genotypes, because of nutritional and genotypic differences, produced lowest number of florets per head. No statistical difference was obtained between maturity groups for empty achene percentages, although the differences between hybrids and non-hybrid cultivars were significant (P<5%). This can be related to tolerance of hybrids to adverse environmental conditions and better partitioning of photosynthates to grain during grain filling period. For the number of grains per head, no differences were obtained among maturity groups and genotypes. Differences among early types and between non-hybrid and hybrid cultivars were significant (P<5%) for 1000 grain weight, while, there was not significant difference among maturity groups. Among maturity groups and genotypes and also between hybrid and non- hybrid varieties no differences were observed for head diameters of but the difference of early types with other types was significant. Difference of maturity groups and also difference of non-hybrid from those of cultivars, hybrids, were not significant in terms of grain yield but the yield was reduced by delayed planting. It can be concluded that early maturity groups (especially Hybrid 25), as the second crop in VARAMIN, are preferred, because they can be harvested earlier and leave the land idle for later seed-bed preparation and proper soil fertility in the fall. In addition, Hybrid 25, due to higher yielding capacity is recommended to the region as the second crop.

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APA: Copy

SHAKIBA, MOHAMMAD REZA, AALIARI, HOUSHANG, JAVANSHIR, A., ESFANDIARI, E., AZIZPOUR, K., & SHEKAARI, F.. (2006). EVALUATION OF YIELD AND YIELD COMPONENTS OF THREE MATURITY GROUPS OF SUNFLOWER AS A SECOND CROP IN VARAMIN, IRAN. JOURNAL OF AGRICULTURAL KNOWLEDGE, 16(1), 41-50. SID. https://sid.ir/paper/28896/en

Vancouver: Copy

SHAKIBA MOHAMMAD REZA, AALIARI HOUSHANG, JAVANSHIR A., ESFANDIARI E., AZIZPOUR K., SHEKAARI F.. EVALUATION OF YIELD AND YIELD COMPONENTS OF THREE MATURITY GROUPS OF SUNFLOWER AS A SECOND CROP IN VARAMIN, IRAN. JOURNAL OF AGRICULTURAL KNOWLEDGE[Internet]. 2006;16(1):41-50. Available from: https://sid.ir/paper/28896/en

IEEE: Copy

MOHAMMAD REZA SHAKIBA, HOUSHANG AALIARI, A. JAVANSHIR, E. ESFANDIARI, K. AZIZPOUR, and F. SHEKAARI, “EVALUATION OF YIELD AND YIELD COMPONENTS OF THREE MATURITY GROUPS OF SUNFLOWER AS A SECOND CROP IN VARAMIN, IRAN,” JOURNAL OF AGRICULTURAL KNOWLEDGE, vol. 16, no. 1, pp. 41–50, 2006, [Online]. Available: https://sid.ir/paper/28896/en

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