Growth, yield and fiber quality characteristics of Bt and non-Bt cotton cultivars in response to boron nutrition

被引：4

作者：

Mehran, Muhammad ^{[1
]}

Ashraf, Muhammad ^{[1
]}

Shahzad, Sher Muhammad ^{[2
]}

Shakir, Muhammad Siddique ^{[3
]}

Azhar, Muhammad Tehseen ^{[4
,7
]}

Ahmad, Fiaz ^{[5
]}

Alvi, Alamgir ^{[6
]}

机构：

[1] Bahauddin Zakariya Univ, Dept Soil Sci, Multan, Pakistan

[2] Univ Sargodha, Coll Agr, Dept Soil & Environm Sci, Sargodha, Pakistan

[3] Pesticide Residue Lab, Kala Sha Kaku, Pakistan

[4] Univ Agr Faisalabad, Dept Plant Breeding & Genet, Faisalabad, Pakistan

[5] Cent Cotton Res Inst, Physiol Chem Sect, Multan, Pakistan

[6] Soil & Water Testing Lab, Jhelum, Pakistan

[7] Zhengzhou Univ, Sch Agr Sci, Zhengzhou 450000, Peoples R China

来源：

JOURNAL OF COTTON RESEARCH | 2023年 / 6卷 / 01期

关键词：

Boron; Cotton; Fiber length; Fiber strength; GOT; Micronaire value; Seed cotton yield; GOSSYPIUM-HIRSUTUM L; IRRIGATED COTTON; DEFICIENCY; PLANT; SOIL; REQUIREMENT; IMPACT; MATTER; FRUIT;

D O I：

10.1186/s42397-023-00138-x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

BackgroundBoron (B) deficiency is an important factor for poor seed cotton yield and fiber quality. However, it is often missing in the plant nutrition program, particularly in developing countries. The current study investigated B's effect on growth, yield, and fiber quality of Bt (CIM-663) and non-Bt (Cyto-124) cotton cultivars. The experimental plan consisted of twelve treatments: Control (CK); B at 1 mg center dot kg(-1) soil application (SB1); 2 mg center dot kg(-1) B (SB2); 3 mg center dot kg(-1) B (SB3); 0.2% B foliar spray (FB1); 0.4% B foliar spray (FB2); 1 mg center dot kg(-1) B + 0.2% B foliar spray (SB1 + FB1); 1 mg center dot kg(-1) B + 0.4% B foliar spray (SB1 + FB2); 2 mg center dot kg(-1) B + 0.2% B foliar spray (SB2 + FB1); 2 mg center dot kg(-1) B + 0.4% B foliar spray (SB2 + FB2); 3 mg center dot kg(-1) B + 0.2% B foliar spray (SB3 + FB1); 3 mg center dot kg(-1) B + 0.4% B foliar spray (SB3 + FB2). Each treatment has three replications, one pot having two plants per replication.ResultsB nutrition at all levels and methods of application significantly (P <= 0.05) affected the growth, physiological, yield, and fiber quality characteristics of both cotton cultivars. However, SB2 either alone or in combination with foliar spray showed superiority over others, particularly in the non-Bt cultivar which responded better to B nutrition. Maximum improvement in monopodial branches (345%), sympodial branches (143%), chlorophyll-a (177%), chlorophyll-b (194%), photosynthesis (169%), and ginning out turn (579%) in the non-Bt cultivar was found with SB2 compared with CK. In Bt cultivar, although no consistent trend was found but integrated use of SB3 with foliar spray performed relatively better for improving cotton growth compared with other treatments. Fiber quality characteristics in both cultivars were improved markedly but variably with different B treatments.ConclusionB nutrition with SB2 either alone or in combination with foliar spray was found optimum for improving cotton's growth and yield characteristics.

引用

页数：12