@article{MAKHILLBRJ20081428633,
    title = {Analysis of Combining Ability and Heritability about Nut Quality of Walnut},
    journal = {Botany Research Journal},
    volume = {1},
    number = {4},
    pages = {75-78},
    year = {2008},
    issn = {1995-4751},
    doi = {brj.2008.75.78},
    url = {https://makhillpublications.co/view-article.php?issn=1995-4751&doi=brj.2008.75.78},
    author = {Zhou,Xiao,Zhang,Zhang and},
    keywords = {Walnut,nut quality,combining ability,heritability},
    abstract = {Twenty four hybrid combinations were formulated by NCIIdesign using hybrids (<I>J. sigillata</I> x <I>J. regia</I>) Yunxin 7926 (P<SUB>11</SUB>), 8064 (P<SUB>12</SUB>), 8034 (P<SUB>13</SUB>), 7914 (P<SUB>14</SUB>) as female parent and 6 superior trees of <I>J. sigillata</I> from Sichuan as male parent. The combining ability and heritability of walnut characters were studied, including diameter, weight, thickness and rate of kernel. The result showed that: both additive variation and non-additive variation were significant in these 4 characters, but the additive variation was principle. Different parent had different excellent genes. P<SUB>24</SUB>, P<SUB>23, </SUB>P<SUB>22</SUB> and P<SUB>14 </SUB>were the best parent to improve walnut diameter and weight, followed by P<SUB>21</SUB>, P<SUB>13</SUB> and P11. In contrast, P<SUB>25</SUB>, and P<SUB>26</SUB> showed poor effect on diameter and weight. Cross P<SUB>11</SUB>×P<SUB>23</SUB>, P<SUB>11</SUB>×P<SUB>24 </SUB>and P<SUB>12</SUB>×P<SUB>24</SUB> were good for increasing diameter, while cross P<SUB>11</SUB>×P<SUB>26 </SUB>was the best in increasing rate of kernel. The broad-sense heritability was ordered from high to low as diameter (0.990) &gt;thickness(0.968) &gt;rate of kernel (0.970) &gt;weight (0.968) and the narrow-sense heritability was ordered as diameter (0.844) &gt;thickness(0.821) &gt;weight (0.735) &gt;rate of kernel (0.693).}
    }