EFFECT OF GAMMA IRRADIATION ON VEGETATIVE GROWTH AND BIOCHEMICAL CHANGES OF CUMIN PLANTS

Journal of Productivity and Development Pub Date : 2024-01-01 DOI:10.21608/jpd.2024.346236

Tahany El-sayed, Awad Shala, Osama Tawfik

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Abstract

Gamma irradiation has emerged as a promising approach to enhance yield and quality of various crops. The aim of the current work was to assess the effect of various gamma irradiation doses (0, 100, 150, 200, 250 and 300 Gy) on the vegetative growth, biochemical changes and oil yield of cumin plants during the two consecutive seasons of 2020/2021 and 2021/2022 at the Experimental Farm of Sakha Horticulture Research Station, Kafr El-Sheikh Governorate, Egypt in a randomized complete blocks design with three replications. The results showed that low doses of gamma irradiation significantly enhanced vegetative growth and yield characteristics, photosynthetic pigments, antioxidant activity and oil yield. On the other hand, as the applied doses increased, plant height, number of branches, dry weight, chlorophyll content and oil yield were decreased, while carotenoid and phenolic content were increased as defence mechanism against elevated irradiation doses compared to the control. The genetic advance (GA%) and the high heritability (Hb%) values indicated that the second generations may show additional advancements.

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伽马辐照对小茴香植物无性生殖和生化变化的影响

伽马辐照已成为提高各种作物产量和质量的一种有前途的方法。本次研究的目的是评估不同伽马辐照剂量（0、100、150、200、250 和 300 Gy）对埃及 Kafr El-Sheikh 省 Sakha 园艺研究站实验农场 2020/2021 和 2021/2022 连续两季小茴香植株的无性生长、生化变化和产油量的影响，采用随机完全区组设计，三次重复。结果表明，低剂量伽马辐照能显著提高无性系生长和产量特征、光合色素、抗氧化活性和出油率。另一方面，与对照相比，随着辐照剂量的增加，植株高度、分枝数、干重、叶绿素含量和产油量都有所下降，而类胡萝卜素和酚类物质的含量则有所增加，这是对辐照剂量升高的防御机制。遗传进展（GA%）和高遗传率（Hb%）值表明，第二代可能会表现出更多的进展。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of Productivity and Development

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