Haploids in Crop Improvement I

1. Front Matter

   Pages I-XX

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2. Induction of Haploids, Pollen Embryogenesis, Ultrastructure, and Genetic Stability

   1. Front Matter

      Pages 1-1

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   2. In Vitro Production of Haploids and Their Use in Cell Genetics and Plant Breeding

      • Y. P. S. Bajaj

      Pages 3-44

   3. Environmental and Genetical Aspects of Pollen Embryogenesis

      • W. Powell

      Pages 45-65

   4. Ultrastructure of Pollen Embryogenesis

      • T. L. Reynolds

      Pages 66-82

   5. Genetic Stability in Haploid Cell Cultures

      • A. Ziauddin, K. J. Kasha

      Pages 83-98

3. Cereals

   1. Front Matter

      Pages 99-99

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   2. Wheat (Triticum aestivum): In Vitro Production and Utilization of Doubled Haploids

      • E. Picard, A. Rode, G. Doussinault, M. Rousset, M. Rives

      Pages 101-124

   3. Barley (Hordeum vulgare L.): Anther Culture and the Production of Haploids

      • Xu Zhi-Hong

      Pages 125-175

   4. Maize (Zea mays L.): In Vitro Production of Haploids

      • A. D. Genovesi

      Pages 176-203

   5. Rice (Oryza sativa L.): Guan 18 - an Improved Variety Through Anther Culture

      • Zhu Deyao, Pan Xigan

      Pages 204-211

4. Trees

   1. Front Matter

      Pages 213-213

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   2. Rubber (Hevea brasiliensis Muell. Arg.): In Vitro Production of Haploids

      • Chen Zhenghua

      Pages 215-236

   3. Poplars (Populus spp.): In Vitro Production of Haploids

      • Wu Kexian, P. Nagarajan

      Pages 237-249

   4. Apple (Malus domestica Borkh.): In Vitro Induction of Androgenesis

      • E. Milewska-Pawliczuk

      Pages 250-263

   5. Litchi (Litchi chinensis Sonn.): In Vitro Production of Haploid Plants

      • Fu Lianfang

      Pages 264-274

5. Medicinal Plants

   1. Front Matter

      Pages 275-275

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   2. Digitalis spp.: In Vitro Production of Haploids

      • P. Pérez-Bermúdez, M.-J. Cornejo, J. Segura

      Pages 277-289

   3. Hyoscyamus spp.: Anther Culture Studies

      • V. Raghavan

      Pages 290-305

6. Vegetables, Fruits, Miscellaneous

   1. Front Matter

      Pages 307-307

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Haploid plants have the gametophytic number of chromosomes. They are of great importance, especially in studies on the induction of muta­ tions and also for the production of homozygous plants, they are needed in large numbers. The conventional methods employed by plant breeders for their production are cumbersome, time-consuming, laborious and rather inefficient. Sometimes it may take years to produce a pure line. However, with the introduction of in vitro techniques, especially anther culture for the induction of androgenesis, it has become increasingly evi­ dent that these methods considerably accelerate the production of haploids for plant breeding programs. During the last decade, in vitro-produced haploids have been incor­ porated into breeding programs of many agricultural crops, and positive results have been obtained especially with rice, wheat, potato, barley, maize, asparagus, sunflower, brassica, tobacco, etc. Among these, rice and wheat are the best examples in which a number of improved varieties have been released. In wheat, the breeding cycle can be shortened by three or four generations when the pollen haploid breeding method is used instead of conventional cross-breeding. The release of the wheat varieties Jinghua 1 and Florin is a typical example of what can be achieved with other crops. Taking these developments into considera­ tion, the present volume, Haploids in Crop Improvement I, was compil­ ed.

• Embryo
• Helianthus annuus L.
• Hordeum vulgare L.
• Zea mays L.
• arabidopsis thaliana
• bean
• breeding
• cluster analysis
• hybridization
• maize
• molecular aspects
• plant breeding
• quality
• sunflower
• wheat

• New Delhi, India

  Y. P. S. Bajaj

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