caa a22 4500 477135269 CHVBK 20180405111716.0 cr unu---uuuuu 170330e19970701xx s 000 0 eng 10.1023/A:1003093532561 doi (NATIONALLICENCE)springer-10.1023/A:1003093532561 Boron deficiency induced male sterility in wheat (Triticum aestivum L.) and implications for plant breeding [Elektronische Daten] [B. Rerkasem, S. Jamjod] Boron (B) deficiency causes grain set in wheat to fail. A wide range of genotypic variation in the response to low B has been observed. Genotypes were screened in low B in soil and sand culture, and classified into five groups, namely, very sensitive, sensitive, moderately sensitive, moderately tolerant and tolerant. At very low levels of B, the very sensitive to sensitive genotypes were completely male sterile and set only a few or no grain, while the tolerant genotypes set grain normally. Natural outcrossing was detected in these male sterile plants when a tolerant genotype was growing nearby. Grain set by cross fertilisation was markedly enhanced by a B application directly on the ear of the male sterile plants. Three practical implications are suggested. Firstly, genotypes that are tolerant to low B can provide a solution for grain set failure caused by B deficiency. Secondly, the potential for outcrossing in male sterile B deficient wheat has to be taken into account in the maintenance of pure lines in low B soils even though wheat is normally self pollinated. Thirdly, a simple and novel method for hybridization is suggested, in which B deficiency is used as fertility selective medium and male sterile female parents and fertile male parents are provided by genotypic variation in the response to low B. Kluwer Academic Publishers, 1997 boron deficiency nationallicence fertility selective media nationallicence hybridization nationallicence male sterility nationallicence Triticum aestivum nationallicence wheat nationallicence Rerkasem B. Agronomy Department, Faculty of Agriculture, Chiang Mai University, 50200, Chiang Mai, Thailand aut Jamjod S. Agronomy Department, Faculty of Agriculture, Chiang Mai University, 50200, Chiang Mai, Thailand aut Euphytica Kluwer Academic Publishers 96/2(1997-07-01), 257-262 0014-2336 96:2<257 1997 96 10681 https://doi.org/10.1023/A:1003093532561 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003093532561 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rerkasem B. Agronomy Department, Faculty of Agriculture, Chiang Mai University, 50200, Chiang Mai, Thailand aut NATIONALLICENCE 700 1- Jamjod S. Agronomy Department, Faculty of Agriculture, Chiang Mai University, 50200, Chiang Mai, Thailand aut NATIONALLICENCE 773 0- Euphytica Kluwer Academic Publishers 96/2(1997-07-01), 257-262 0014-2336 96:2<257 1997 96 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer