ESTIMATION OF GENETIC PARAMETERS FOR SOME AGRONOMIC TRAITS IN BREAD WHEAT (Triticum aestivum L.) CROSSES UNDER LOW NITROGEN FERTILIZATION
YASSMIN TAREK MOHAMED EMAM;
Abstract
The present study aimed to evaluate mean performance of six bread wheat genotypes and their respective 15 F1 crosses for grain yield and its contributing traits at two nitrogen fertilization levels, to determine suitable selection criteria for selecting genotypes tolerant to nitrogen stress conditions and to estimate some genetic parameters for the studied traits as basis to improve bread wheat under nitrogen stressed conditions.
The field experimental work was conducted during three successive growing seasons of 2016/17, 2017/18 and 2018/19. The four local cultivars; Giza 168 (P2), Sakha 93 (P4), Sids 12 (P5) and Misr 1 (P6) as well as the introduced Syrian cultivar Cham 4 (P1) and promising line 36 (P3) were chosen on the basis of their genetic diversity in some agronomic traits and nitrogen stress tolerance to achieve this investigation. In 2016/17 growing season, a half diallel set of crosses involving the six parents excluding reciprocals was done to obtain the seeds of 15 F1’s. In 2017/18 season, the half diallel cross was again made to increase quantity of F1 seeds. In 2018/19 season, the six parental genotypes along with their respective 15 F1’s (21 entries) were evaluated in the Agric. Res. Stat. of the Fac. of Agric., Ain Shams Univ., at Shalakan, Kalubia Governorate, Egypt, in two separate and adjacent field experiments representing two different nitrogen fertilization levels i.e., 80 (recommended level) and 40 (low level) kg N/fed. Each experiment was designed in a randomized complete block with three replications. The experimental plot consisted of two rows for each genotype. The row was 2 m in length and rows spacing and distance between plants within row were 25 and 10 cm, respectively. Plants were thinned at one plant per hill before first irrigation.
Heading and maturity dates were recorded. Also, flag leaf area and chlorophyll content were measured at anthesis stage. At harvest, ten
The field experimental work was conducted during three successive growing seasons of 2016/17, 2017/18 and 2018/19. The four local cultivars; Giza 168 (P2), Sakha 93 (P4), Sids 12 (P5) and Misr 1 (P6) as well as the introduced Syrian cultivar Cham 4 (P1) and promising line 36 (P3) were chosen on the basis of their genetic diversity in some agronomic traits and nitrogen stress tolerance to achieve this investigation. In 2016/17 growing season, a half diallel set of crosses involving the six parents excluding reciprocals was done to obtain the seeds of 15 F1’s. In 2017/18 season, the half diallel cross was again made to increase quantity of F1 seeds. In 2018/19 season, the six parental genotypes along with their respective 15 F1’s (21 entries) were evaluated in the Agric. Res. Stat. of the Fac. of Agric., Ain Shams Univ., at Shalakan, Kalubia Governorate, Egypt, in two separate and adjacent field experiments representing two different nitrogen fertilization levels i.e., 80 (recommended level) and 40 (low level) kg N/fed. Each experiment was designed in a randomized complete block with three replications. The experimental plot consisted of two rows for each genotype. The row was 2 m in length and rows spacing and distance between plants within row were 25 and 10 cm, respectively. Plants were thinned at one plant per hill before first irrigation.
Heading and maturity dates were recorded. Also, flag leaf area and chlorophyll content were measured at anthesis stage. At harvest, ten
Other data
| Title | ESTIMATION OF GENETIC PARAMETERS FOR SOME AGRONOMIC TRAITS IN BREAD WHEAT (Triticum aestivum L.) CROSSES UNDER LOW NITROGEN FERTILIZATION | Other Titles | تقدير المعالم الوراثية لبعض الصفات المحصولية في هجن من قمح الخبز تحت التسميد النيتروجيني المنخفض | Authors | YASSMIN TAREK MOHAMED EMAM | Issue Date | 2021 |
Attached Files
| File | Size | Format | |
|---|---|---|---|
| BB7870.pdf | 1.13 MB | Adobe PDF | View/Open |
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.