Scientific Society of Agricultural Sciences
Hortscience Journal of Suez Canal University
2314-7946
2636-3119
2
2
2014
07
01
Heterosis in Relation to Combining Ability Variancesin Eggplant (Solanum melongena L.)
1
12
EN
Mahmoud
M.
Plant Production Department (Vegetable). Fac. Environ. Agric. Sci., El-Arish, Suez Canal Univ., Egypt
10.21608/hjsc.2014.6487
This study was carried out at the Experimental Farm, Fac. of Environ. Agric. Sci., El Arish, Suez Canal<br />Univ., Egypt, during three successive summer seasons (2009 to 2011). Seven elongated eggplant fruit lines were used in<br />7x7 half- diallel cross mating design to produce 21F1 hybrids. In the two successive summer seasons of 2010 and 2011,<br />all 28 genotypes were evaluated in a field experiment with check hybrid "Snow F1". A randomized complete block<br />design with three replicates was used in the two seasons of 2010 and 2011 to estimate heterosis relative to mid parents,<br />better parent and check hybrid, also dominance type and its relation to combining ability variances were determine for<br />some plant and fruit characters. The obtained results showed high significant differences among the parental lines and<br />their 21F1hybrids for all studied traits. Heterosis over mid-parents, better parent and check hybrid were recorded in 14,<br />8 and 4 ones for total fruit yield/plant, respectively. However, heterosis over mid-parents and check hybrid were<br />reflected by 5 and 4 crosses for number of branches, 5 and 12 ones for number of fruits/cluster, 10 and 15 ones for<br />percent of fruit clusters/plant and 8 and 11 ones for total fruit number /plant, respectively. However, no heterosis was<br />detected for average fruit weight, fruit length and diameter. Determination of dominance type and GCA and SCA<br />variances showed that additive gene action play the main role in the inheritance of all studied traits, except total<br />yield/plant trait. The non-additive gene action was predominance and more important in the inheritance of total<br />yield/plant.
Heterosis,Combining Ability Variances,Eggplant
https://hjsc.journals.ekb.eg/article_6487.html
https://hjsc.journals.ekb.eg/article_6487_581e25a8f67e1d6b6a04e06e33938d62.pdf
Scientific Society of Agricultural Sciences
Hortscience Journal of Suez Canal University
2314-7946
2636-3119
2
2
2014
07
01
Effect of Saline Water Irrigation on Sour Orange and Volkamer Lemon Seedling Rootstocks
13
20
EN
El-Deeb
D.
Plant Production Dept. Fac. Env. Agric. Sci., Suez Canal Univ., Egypt
M.
Sourour
Plant Production Dept. Fac. Env. Agric. Sci., Suez Canal Univ., Egypt
H.
El-Alakmy
Plant Production Dept. Fac. Env. Agric. Sci., Suez Canal Univ., Egypt
10.21608/hjsc.2014.6488
This study was carried out during the two consecutive seasons of 22 and 23 in shade house for Plant<br />Production Dept. Fac. Environ. Agri. Sci. Suez Canal Univ. Egypt. Two citrus six-month-old uniform seedling citrus<br />rootstocks namely: Sour orange and Volkamer lemon transferred into black plastic tube PVC (5 cm diameter x 4 cm<br />depth) filled with 2kg growth media mixture of sand soil and peat moss (4: by volume) and irrigated using the tap<br />water at 4 days before run treatments. These seedlings were subjected to three different irrigation saline water levels<br />(tap water 7 "control", 2, and 3 ppm) to determine the effects of water salt level on growth parameters,<br />chemical compositions, leaf total pigments and proline. The results obtained showed that Volkamer lemon seedlings<br />had the greatest leaf and root biomass, photosynthetic pigments, proline, leaf k content and area of root vascular bundle<br />and had the lowest values leaf , Cl and a content, thickness of root cortex, thickness of mesophyll tissue and leaf<br />blade, while Sour orange seedlings were on the contrary. n the other hand, irrigation with the saline water caused<br />decrease the all vegetative growth parameters, plant photosynthetic pigments and area of root vascular cylinder, while<br />increased the leaf , Cl and a content, leaf proline concentration and thickness of root cortex, thickness of mesophyll<br />tissue and leaf blade. Finally, vegetative growth parameters, leaf mineral and leaf total pigments analysis and anatomy<br />features for root and leaf blade indicated that Volkamer lemon rootstock is more tolerant to salinity of irrigation water.
Sour orange,Volkamer lemon,proline,salinity stress,saline water
https://hjsc.journals.ekb.eg/article_6488.html
https://hjsc.journals.ekb.eg/article_6488_3e0f3de5a1888404b142fa9dc823881d.pdf