We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Photosynthetic characteristics of the subtending leaf of cotton boll at different fruiting branch nodes and their relationships with lint yield and fiber quality.
- Authors
Jingran Liu; Yali Meng; Fengjuan Lv; Ji Chen; Yina Ma; Youhua Wang; Binglin Chen; Lei Zhang; Zhiguo Zhou
- Abstract
To investigate photosynthetic characteristics of the subtending leaf at the 2-3rd and 10-11th fruiting branch (FBN, FB2-3, and FB10-11), and their relationship with cotton yield and quality, field experiments were conducted using two cotton cultivars, Kemian 1 and Sumian 15. The results showed that with FBN increasing, chlorophyll (Chl) components, Pn and non-photochemical quenching (NPQ) in the subtending leaf significantly declined, while soluble sugar, amino acid and their ratio (CSS/CAA) as well as Fv/Fm increased. These results indicated that (1) non-radiative dissipation of excess light energy at FB2-3 was reduced to improve solar energy utilization efficiency to compensate for lower Pn, (2) higher NPQ at FB10-11 played a role in leaf photo-damage avoidance, (3) boll weight was related to the CSS/CAA ratio rather than carbohydrates content alone, (4) with FBN increasing, lint biomass and lint/seed ratio increased significantly, but lint yield decreased due to lower relative amount of bolls, and (5) the decreases in Pn, sucrose content and CSS/CAA in the subtending leaf at FB2-3 resulted in lower boll weight and fiber strength.
- Subjects
COTTON yields; PHOTOSYNTHESIS genetics; FRUIT development
- Publication
Frontiers in Plant Science, 2015, p1
- ISSN
1664-462X
- Publication type
Article
- DOI
10.3389/fpls.2015.00747