The Effect Of High Salt Stress On The Agronomic, Chlorophyll Content, and Yield Characteristics Of Several Rice Varieties

Abstract

Salinity caused losses to rice farmers because it becomes an obstacle to rice growth and decrease a productivity. The use of superior rice variety is an effort to rice produce optimally. In order to examined and compared several rice varieties to salinity stress based on agronomic, chlorophyll content, and yield characters. A factorial completely randomized design was used in this study, the first factor was rice varieties consisting of Banyuasin, Inpari 30, and Inpari 34, while the second factor was salt concentration consisted of non-saline and 8 dS m−1. There were six combination treatments and repeated three times. The results showed that Inpari 34 had a tallest plant compared to other varieties in non-saline and 8 dS m−1. Banyuasin and Inpari 30 had wider leaves, the number of panicles per clump, and higher harvest index compared to Inpari 34, however Inpari 34 produce more grain per panicle compared of two varieties. Inpari 30 grown in 8 dS m−1 had a highest chlorophyll a-b compared to the other treatment. Inpari 30 had the best agronomic performance indicated by increases of leaf area, number of panicles per clump, harvest index, and content of chlorophyll a-b.

Effects of prohexadione calcium spraying during the booting stage on panicle traits, yield, and related physiological characteristics of rice under salt stress

“…Panicle and yield traits of rice were severely inhibited, similar to previous research results ( Gerona et al, 2019 ). This may be due to the inhibition of root water uptake by salt stress at the reproductive stage, resulting in blocked physiological processes and unsatisfactory production and distribution of assimilates ( Nasrudin, Isnaeni & Fahmi, 2022 ). It has been reported that Pro-Ca can shorten the length of internodes in rice and increase the seed setting rate, 1,000-grain weight, and yield of rice ( Pal & Johal, 2019 ).…”

“…Rice ( Oryza sativa L. ) is a staple global crop that feeds approximately half of the world’s population ( Singh et al, 2019 ) and is considered a salt-sensitive crop ( Arif et al, 2019 ). Salinity inhibits the growth and development of rice plants ( Chang et al, 2019 ), by affecting the morph-physiological traits of the plants, resulting in decreased grain yield ( Nasrudin, Isnaeni & Fahmi, 2022 ). Improving the salt tolerance of rice plants will increase the development and utilization potential of saline-alkali land, which is conducive to sustainable agricultural development.…”