ACTA AGRICULTURAE BOREALI-SINICA ›› 2017, Vol. 32 ›› Issue (3): 137-142. doi: 10.7668/hbnxb.2017.03.021

Special Issue: Cotton Biotechnology

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Study on Breeding and Physiological and Biochemical Characteristics of Cotton with Different Hair Traits of Near Isogenic Lines

ZHANG Jinlong, LIU Yi, QU Yunfang, KANG Nana, DU Haiye, HUANG Jinling   

  1. College of Agronomy, Shanxi Agricultural University, Taigu 030801, China
  • Received:2017-03-24 Published:2017-06-28

Abstract: To cultivate new cotton varieties with fine character against diseases and insect pests and locate and clone the trichome gene,near-isogenic cotton lines with smooth and trichome were bred. Photosynthetic rates,chlorophyll amounts,phenylalanine ammonialyase (PAL) activities and tannin levels were studied to disclose the differences between physiological and biochemical chartacteristics on two different trichome near-isogenic cotton lines through the photosynthetic physiology combined with related biochemical index determination. The results showed that chlorophyll a,b and total amount dynamic change trend were consistent between two cotton near-isogenic lines with higher amount at bud stage and lower at flowering and boll stage. Net photosynthetic rate change trend (up-down-up) were also the same. Therefore photosynthetic rates and chlorophyll amounts had the same change trend and their differences were not obvious between the materials.Tannin contents between two lines in fiber and seed coat changed with the same trend-from high to low. Fiber PAL activities decreased in thichome but decreased and then rised in smooth. Testa PAL activities tised and then remained unchanged. PAL activities and tannin levels were evidently different with trichome cotton more than the smooth. It was speculated that PAL activities and tannin levels were associated with the trichome trait.

Key words: Near-isogenic line, Trichome trait, Chlorophyll amounts, Phenylalanine ammonialyase (PAL), Tannin

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Cite this article

ZHANG Jinlong, LIU Yi, QU Yunfang, KANG Nana, DU Haiye, HUANG Jinling. Study on Breeding and Physiological and Biochemical Characteristics of Cotton with Different Hair Traits of Near Isogenic Lines[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2017, 32(3): 137-142. doi: 10.7668/hbnxb.2017.03.021.

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