Preliminary report on the selection of a new strain of nucellus seedlings of C. Reticulata Blanco

To purify and rejuvenate the variety of C.reticulata Blanco "Fuju",pomelo was used as the pollen parent and Fuju the maternal plant to cultivate nucellus seedlings.Applying the top-grafting-exchanging-variety technique,the flowering and fruiting age of the nucellus seedlings was advanced by 2-3 years.The juvenile period of Fuju was cut short and the fruit quality improved while maintaining its original desirable characteristics.After years of observation and assessment on the top-grafting plants of nucellus seedlings,considerable quality variations were found among nucellus embryo plants.Three strains of superior varieties were identified: "Xinnong 1","Xinnong 2" and "Xinnong 3".They had high fruit yield,large fruit size,bright peel color,less seeds and high content of soluble solids.For example,Xinnong 1 strain contained 14.2% soluble solids,averaged 8 seeds,and weighed 118 g per fruit.This variety is recommended for expanded cultivation.