Triploids and Haploid Progenies Derived from Small Seeds of 'Banpeiyu', a Pummelo, Crossed with 'Ruby Red' Grapefruit
Triploids and Haploid Progenies Derived from Small Seeds of 'Banpeiyu', a Pummelo, Crossed with 'Ruby Red' Grapefruit
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柚子“Banpeiyu”小种子与“宝石红”葡萄柚杂交产生的三倍体和单倍体后代
DOI：
10.2503/jjshs.65.255
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发表时间：
1996
影响因子：
--
通讯作者：
M. Iwamasa
中科院分区：
文献类型：
--
作者：
Pichit Toolapong;H. Komatsu;M. Iwamasa
为了选育出适应日本柑桔产区的三倍体类柚品种，本研究以‘半杯柚’和‘红宝石柚’为材料进行杂交。para-disi Macf.）。在2，049粒种子中，有82粒被选作小种子。在小种子获得的幼苗中，分离出1个单倍体、18个二倍体和51个三倍体。该单倍体幼苗生长矮小，叶片呈玫瑰色。以枳橙子（Poncirus trifoliata Raf.）砧木，然而，它生长正常。三倍体种子萌发后立即生长不良，但一年后生长旺盛，与正常大粒种子的二倍体幼苗一样。
In order to establish a triploid grapefruit-like cultivar adaptable to the citrus area of Japan, 'Banpeiyu' (Citrus grandis Osbek) was crossed with 'Ruby Red' grapefruit (C. para-disi Macf.). Out of 2, 049 seeds, 82 were selected as small seeds. Among the seedlings obtained from the small seeds, one haploid, 18 diploids, and 51 triploids segregated. The haploid seedling has a dwarf growth habit with a roseate leaf type. When grafted onto trifoliate orange (Poncirus trifoliata Raf.) rootstock, however, it grew normally. The tri-ploids grew poorly immediately after germination, but after one year they grew as vigor-ously and as well as the diploid seedlings derived from the normal large seeds.