1. Mutant genes affecting higher plant meiosis

   • M. L. H. Kaul
   • T. G. K. Murthy

   Review Pages: 449 - 466

2. Diallel analysis of submergence tolerance in rice, Oryza sativa L.

   • H. K. Mohanty
   • G. S. Khush

   OriginalPaper Pages: 467 - 473

3. Crossing maize with sorghum, Tripsacum and millet: the products and their level of development following pollination

   • S. Bernard
   • D. C. Jewell

   OriginalPaper Pages: 474 - 483

4. A FORTRAN program for analysis of genotypic frequencies and description of the breeding structure of populations

   • W. C. Black IV
   • E. S. Krafsur

   OriginalPaper Pages: 484 - 490

5. A FORTRAN program for the calculation and analysis of two-locus linkage disequilibrium coefficients

   • W. C. Black IV
   • E. S. Krafsur

   OriginalPaper Pages: 491 - 496

6. Transfer systems and covariance under assortative mating

   • G. M. Tallis

   OriginalPaper Pages: 497 - 504

7. The effect of parental genotype on initiation of embryogenic callus from elite maize (Zea mays L.) germplasm

   • D. T. Tomes
   • O. S. Smith

   OriginalPaper Pages: 505 - 509

8. Identification and characterization of DNA clones encoding group-II glycinin subunits

   • B. Scallon
   • V. H. Thanh
   • N. C. Nielsen

   OriginalPaper Pages: 510 - 519

9. Linkage analysis of genes for resistance to downy mildew (Bremia lactucae) in lettuce (Lactuca sativa)

   • S. H. Hulbert
   • R. W. Michelmore

   OriginalPaper Pages: 520 - 528

10. Sister chromatid differential staining and NOR activity of BrdU-resistant sublines

    • Yan Yongshan
    • Qian Jin
    • Xi Xiahui

    OriginalPaper Pages: 529 - 535

11. Cytogenetic analysis of forms produced by crossing hexaploid triticale with common wheat

    • N. S. Badaev
    • E. D. Badaeva
    • A. V. Zelenin

    OriginalPaper Pages: 536 - 541

12. Genetic variations in the hybrids of rice (Oryza sativa) and sorghum (Sorghum vulgare)

    • Zu Deming
    • Chen Shanbao
    • Xie Bensong

    OriginalPaper Pages: 542 - 547

13. Regulation of karyotype stability in tobacco tissue cultures of normal and tumorous genotypes

    • E. I. Kovács

    OriginalPaper Pages: 548 - 554

14. Line and crossing effects in a diallel mating system with highly inbred lines of White Leghorn chickens

    • C. Hagger

    OriginalPaper Pages: 555 - 560

15. Genetic and biochemical studies on the conversion of flavanones to dihydroflavonols in flowers of Petunia hybrida

    • S. Froemel
    • P. de Vlaming
    • A. W. Schram

    OriginalPaper Pages: 561 - 568

16. Temporal variation of allele frequencies in populations of Akodon dolores (Rodentia, Cricetidae)

    • L. I. Apfelbaum
    • A. Blanco

    OriginalPaper Pages: 569 - 572

17. Book reviews

    • G. J. de Klerk
    • J. W. M. Osse
    • H. van Dijk

    BookReview Pages: 573 - 576

18. Announcement

    Announcement Pages: 576 - 576

19. Author's correction

    Erratum Pages: 576 - 576