Investigation of Varietal Variations in Pecan (Carya illinoensis Koch) Cultivars for Extending a Business Period of Tourism Farm in Autumn

Maeda, Takaaki; Yonemoto, Yoshimi; Hagiwara, Susumu; Taniguchi, Masayuki

doi:10.2503/hrj.5.227

Cited by 2 publications

(1 citation statement)

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“…Only Pawnee variety represents poor kernel % especially in the 2 nd season as it recorded (42.36 %) comparing to the other varieties. These results are in agreement with those obtained by (Herrera, 1985;Yao et al, 2004;Thompson, 2005 andMaeda, 2006) they demonstrated that, some factors have to be taken into consideration when selecting a variety as regular production capacity, tree growth, branching properties, nut size and quality, kernel percentage, maturity and pollination characteristics. One of the most important characteristics of pecan fruit evaluation should be nut filling which give an idea of the edible part of the fruit and an indication for the nutritional status of the tree.…”

Section: Fruit Quality Characteristicssupporting

confidence: 91%

Evaluation of Some Imported Pecan Varieties Under Giza Governorate Environmental Conditions

Abou-Taleb¹,

El-Taweel²,

Ali³

2010

Journal of Plant Production

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This evaluation included morphological, flowering, yield and fruit quality, physical characteristics as well as kernel oil fatty acids composition and the ability to vegetative propagation by grafting. The Effect of environmental conditions on dichogamy phenomenon was also studied. It can be clearly noticed that, there is a positive relation between shoot length & diameter, av. No. of leaves per shoot and internodes length, where Burkett variety was the superior in this concern, while, Pawnee variety exceeded the others in twig length and No. of shoots/twig. Desirable var. recorded the highest No. / of leaflets/leave and leaflet area. Western Schley had smaller tree size. There was an obvious varietals difference in pecan bud developmental stages (dormant, vegetative and starting buds for staminate or pistillate inflorescences). The highest No. of the abovementioned buds as well as total No. of such buds and No. of fruits/shoot was observed in Western Schley variety except for No. of vegetative buds. Fruit set (%) averaged between 66.04 & 66.04 in Wichita to reach 85.60 & 82.57 in Desirable. Number of days in which pollen shed coincides with stigma receptivity varied between the studied varieties, where there was more consistent period of overlap in Pawnee, Success & Western Schley varieties. The previously mentioned varieties can be classified as protandrous (type, 1), whereas, Burkett, Desirable & Wichita varieties as protogynous ( 2). Moreover, Wichita can be considered a good pollinator for most other studied varieties. Pollen shedding period in Wichita extended with the increase of relative humidity and lower temperature. Burkett followed by Success varieties started and ended to crack shuck and harvesting earlier than other varieties. Western Schley, Desirable & Burkett varieties had an excellent kernel ercentage, respectively, whereas, Pawnee variety was the poorest. Varieties with high nut weight had lower No. of nuts /kg. Desirable followed by Burkett produced the highest yield, while, Success was the lowest. In regard to kernel oil content (%), Desirable followed by Western Schley kernels were the richest. The main compositional characteristic of pecan kernel was the high concentration of oleic acid and very low content of Linolinec acid. It is also interesting to note that, successful grafts (%) varied between varieties from 33.33 % in Western Schley to reach 93.33 & 91.66 % in Desirable & Success, respectively. As a conclusion under the same conditions of the present study Burkett & Success may be recommended as early cropping varieties; Wichita as a good pollinator; Western Schley as a small size tree which can be helpful in increasing number of trees / Fed. which in turn increases yield/Fed. as well as may facilitate the trees cultural practices. The primary pecan varieties Desirable & Burkett performed superior to other varieties in terms of yield; Western Schley and Desirable as varieties that have higher percentages of kernel and oil content and Desirable & Success are characterized by their easy...

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Section: Fruit Quality Characteristicssupporting

confidence: 91%