Study on Inheritance Patterns of Leaf Traits and Fruit Weight in Loquat

Abstract:

In order to understand the genetic diversity and correlation of leaf traits and fruit weight in loquat (Eriobotrya japonica), the correlation between 7 leaf traits and fruit weight in F₁ population (123 individuals) of ‘Ninghaibai’ and ‘Dafang’ hybrid were analyzed. The results showed that the five traits, including length, width and thickness of leaf, petiole length, and fruit weight, inhibited normal distribution with good continuity in offspring. The genetic trend of fruit weight, leaf length, width and thickness was smaller, while petiole length tended to moderate variation. For the F₁ hybrid population, the leaf surface morphology was mainly "rugulose", the leaf shape was mainly "elliptic", and the leaf base shape was mainly "cuneate". The fruit weight had significant positive correlation with petiole length and length, width and thickness of leaf. Therefore, petiole length could be considered as one of the indicators for early screening of excellent plants with large fruits.