Investigation,Collection,and Evaluation of Citrus Landrace Resources in Cili
In the third national survey and collection of crop germplasm resources,the landrace resources of Citrus erythrosa,C.reticulata,C.aurantium,and red pomelo in Cili County were collected.The biological characteristics,leaf and fruit traits,and sensory quality and internal quality were determined to evaluate the application potential of the landrace resources.The results showed that C.aurantium had strong disease and pest resistance,with an obvious ring on the fruit which was characterized by easy peeling and tender flesh with a medicinal use.The fruits of C.reticulata and red pomelo had smooth surface and tender but slightly sour flesh,which can serve as material resources for the genetic improvement of citrus.C.erythrosa plants were strong with round crowns,fruit maturity in late November,and long oblate fruits.Although the edible rate of C.erythrosa was not as high as that(80.71%)of C.reticulata,it still reached 63.57%.The fruit of C.erythrosa was vermilion red,with thin skin easy to be peeled off,rich aroma,moderate sweetness,total soluble solids of 15.10%,and total acids of 0.97%.C.erythrosa was easy to plant and manage,with high and stable yields,strong disease and pest resistance,and strong adaptability,being worthy of further development and utilization.
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