INTERSPECIFIC HYBRIDS FROM CROSS INCOMPATIBLE RELATIVES OF SWEET-POTATO

被引：10

作者：

KOBAYASHI, RS ^{[1
]}

BOUWKAMP, JC ^{[1
]}

SINDEN, SL ^{[1
]}

机构：

[1] UNIV MARYLAND,DEPT HORT,COLLEGE PK,MD 20742

来源：

EUPHYTICA | 1994年 / 80卷 / 03期

关键词：

IPOMOEA SP; IPOMOEA TRILOBA; IPOMOEA TRIFIDA; SWEET-POTATO; INTERSPECIFIC CROSS;

D O I：

10.1007/BF00039646

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Hybrids were obtained from Ipomoea interspecific crosses through ovule culture. The hybridity of the progeny obtained from I. triloba x I. trifida and (I. triloba x I. lacunosa) x I. batatas (4x) crosses was established by comparisons of floral morphology and analyses of peroxidase and esterase isozymes. The hybrids displayed the inflorescence type and sepal shape and texture of their male parents, while corolla size and anther and nectary color tended to be intermediate to their parents. The isozyme banding patterns of the hybrids contained bands present in the patterns of each of their parents. Pollen grain viability, measured by aceto-carmine stainability, was 44.1%, 92.3% and 82.4%, respectively, for the I. triloba x I. trifida hybrid and the (I. triloba x I. lacunosa) x I. batatas (4x) hybrids, H-1 and H-2. A controlled pollination study revealed that the I. triloba x I. trifida, and the (I. triloba x I. lacunosa) x I. batatas (4x) hybrids, H-1 and H-2 were partially self fertile with 6%, 70% and 13%, respectively, of the pollinated flowers producing viable seed. Success in backcrossing and sib-mating varied with the cross combination.

引用

页码：159 / 164

页数：6

共 19 条

[1]

Austin D. F., 1988, EXPLORATION MAINTENA, P27

[2]

HOZYO Y, 1973, TOKYO NATL I AGR S D, V24, P35

[3] USE OF IPOMOEA-TRIFIDA (HBK) G DON GERM PLASM FOR SWEET-POTATO IMPROVEMENT .1. DEVELOPMENT OF SYNTHETIC HEXAPLOIDS OF IPOMOEA-TRIFIDA BY PLOIDY-LEVEL MANIPULATIONS [J].