The Indian Journal of Genetics and Plant Breeding

SCOPUSWeb of Science
  • Year: 1990
  • Volume: 50
  • Issue: 4

A case study on exploitation of heterosis using multiple pest tolerance in Gossypium hirsutum L.

  • Author:
  • I. S. Katageri, S. N. Kadapa, J. V. Goud
  • Total Page Count: 6
  • DOI:
  • Page Number: 314 to 319

Agricultural Research Station, Dharwad Farm, Dharwad 580007.

* Addressee for correspondence.

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Abstract

Multiple pest tolerant Gossypium hirsutum 1. strains were crossed with four bollworm susceptible strains. Nine out of 13 hybrids gave 79–149% higher yields of seed cotton over commercial check, and 1.27–153.8% over better parent (BP). The highest yielding hybrid produced 91.10 g seed cotton per plant as compared to 38.4 g of var. 5harada. 05–28 was the male parent in five high yielding hybrids. Numberof sympodia, boll number per plant and BRI(y) are predominantly controlled by dominant and/or epistatic gene action. Boll weight is mainly additive with tlte F1 values nearly same as mid parental values. Trial strain MPR JK 345·1·2 produced the highest yield (71.7 g/plant> with minimum plant protection. Five hybrids were identified for testing under large scale, with minimum plant protection.

Keywords

Heterosis, intra-hirsutum hybrids, multiple pest tolerance